51731058315774 has 32 divisors (see below), whose sum is σ = 103787175260160. Its totient is φ = 17189557344512.

The previous prime is 51731058315767. The next prime is 51731058315793. The reversal of 51731058315774 is 47751385013715.

It is a super-2 number, since 2×51731058315774² (a number of 28 digits) contains 22 as substring.

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, 1617612 + ... + 10299455.

It is an arithmetic number, because the mean of its divisors is an integer number (3243349226880).

Almost surely, 2^{51731058315774} is an apocalyptic number.

51731058315774 is an abundant number, since it is smaller than the sum of its proper divisors (52056116944386).

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

51731058315774 is a wasteful number, since it uses less digits than its factorization.

51731058315774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11919344.

The product of its (nonzero) digits is 12348000, while the sum is 57.

The spelling of 51731058315774 in words is "fifty-one trillion, seven hundred thirty-one billion, fifty-eight million, three hundred fifteen thousand, seven hundred seventy-four".