It is a congruent number.
Almost surely, 25100981994720 is an apocalyptic number.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
5100981994720 is a wasteful number, since it uses less digits than its factorization.
5100981994720 is an odious number, because the sum of its binary digits is odd.
The spelling of 5100981994720 in words is "five trillion, one hundred billion, nine hundred eighty-one million, nine hundred ninety-four thousand, seven hundred twenty".