Who's the oldest character in fiction with an actual age?

I don't mean characters that have existed "before time itself" or "has always existed" or "millions and millions of years", I'm asking which really old characters have an actual age, like say the Emperor of Manking in Warhammer 40K (about 48k years old), or Russel from True Blood (about 30k years ago), but I'm sure there's older characters like DC Comic's Vandal Savage.