Probably the same as my super-power...to be natively fluent in any language I encounter.
That'll make me really valuable when our alien overlords finally get here.
Have a brain that can actually remember stuff. I've spent my entire life not being able to remember phone numbers, addresses, names, faces, basically anything. I'm seriously lucky that I can remember my own phone number and can barely remember my wife's. I don't know my son's (even though I pay for it) or the landline number. If I have to read a number and type it in, I have to do it by a max of 2 or 3 digits because I can't retain 7 digits for even 15 seconds.
The ability to self-promote. A little bit. I mean, it's fraught, and I wouldn't want to go all the way to the other side and be a dick about it. But there are things that I am good at, and I just expect people to figure that our and praise or reward me, but that doesn't really just happen, of course.
Memory here, too. I can remember stupid useless arcane facts about irrelevant things, but struggle to remember peoples' names, my kids' birthdays, phone numbers (even my own, sometimes), to get milk on the way home etc.