100! = ?

I found projecteuler few days ago and now Im stuck at problen 20!
I have absolutely no idea how Im supposed to do that.
The Problem is:
n! = n * (n-1) * (n-2) *...* 1
What is the sum of numbers of the 100! ?

but that 100! have more that 130 numbers! Is there some kind of variable in C++ which can hold up to 130 numbers?