51331928256 has 112 divisors (see below), whose sum is σ = 172464455680. Its totient is φ = 14666261760.

The previous prime is 51331928251. The next prime is 51331928257. The reversal of 51331928256 is 65282913315.

51331928256 is a `hidden beast` number, since 5 + 1 + 3 + 319 + 282 + 56 = 666.

51331928256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (51331928251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2109760 + ... + 2133951.

Almost surely, 2^51331928256 is an apocalyptic number.

51331928256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51331928256 is an abundant number, since it is smaller than the sum of its proper divisors (121132527424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51331928256 is a wasteful number, since it uses less digits than its factorization.

51331928256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243739 (or 4243723 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The spelling of 51331928256 in words is "fifty-one billion, three hundred thirty-one million, nine hundred twenty-eight thousand, two hundred fifty-six".