None, unless I make a huge effort, and even then I wouldn't feel able to trust my recall particularly well. I gather a lot of Aspies have a special interest in numbers, but I don't seem to have that talent at all.
To me, numbers are cold, forgettable things, too meaningless to remember. I know of course that they often do have a great deal of meaning, but their meaning rarely jumps out at me straight from the digits. For example, telephone numbers are just arbitrary strings of arbitrary symbols, complete nonsense. It took me several years to learn my own telephone numbers, and I still don't have the faintest idea what my moblie phone number is. I used to have to tell people that it was a new number so they wouldn't think I was weird or dishonest. And if somebody tells me a number, I'll forget it within seconds, guaranteed. Somehow numbers go in one ear and out of the other.
But it's fairly well known that people have trouble learning numbers. There is a number-learning strategy that converts numbers into words, the assumption being that people can recall words more easily. Each digit is assigned to a specific consonant, so that the subject can convert a pair of digits into a word just by inserting an appropriate vowel. My problem was always remembering the assignments, which seemed pretty arbitrary.
That word "arbitrary" often occurs to me when I'm struggling to remember information. It's as if my mind doesn't want to commit anything to memory if it seems arbitrary.
I do seem to have some talent for rote learning, though I hate to depend on it for anything important. I can learn the words of songs without a lot of trouble, just by singing them over and over until the pattern sticks. Apart from allowing me to sing the songs without looking at the lyric sheet, it's not a very good way to store and retrieve information though. You tend to have to go right through the data set from the start, to retrieve something at the end of the thing, which takes some time.