51442115256 has 64 divisors (see below), whose sum is σ = 163308307200. Its totient is φ = 14697746784.

The previous prime is 51442115233. The next prime is 51442115267. The reversal of 51442115256 is 65251124415.

51442115256 is a `hidden beast` number, since 51 + 442 + 115 + 2 + 56 = 666.

51442115256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51442115256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17009770 + ... + 17012793.

It is an arithmetic number, because the mean of its divisors is an integer number (2551692300).

Almost surely, 2^51442115256 is an apocalyptic number.

51442115256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51442115256 is an abundant number, since it is smaller than the sum of its proper divisors (111866191944).

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

51442115256 is a wasteful number, since it uses less digits than its factorization.

51442115256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34022585 (or 34022575 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The spelling of 51442115256 in words is "fifty-one billion, four hundred forty-two million, one hundred fifteen thousand, two hundred fifty-six".