I WOULD DESTROY IT ALL!!! First I'd take out a billion to allow me to live like a king (I cannot provide a justification for this.) Then I would convert the rest to various currencies (deciding how much of each currency would be the hardest part, it would be proportional to GDP I suppose.)
Then I would destroy it all, and everyone else would be proportionally richer. I don't have to worry about allocating the money to whomever can use it best, capitalism has already taken care of that (debatable I know, but done better than I ever could.)
So then everyone can decide how to spend their share of my 10 tril, whether it be aid to poor, or hamburgers or whatever.