51137316141561 has 24 divisors (see below), whose sum is σ = 79552356514176. Its totient is φ = 31466973333600.

The previous prime is 51137316141529. The next prime is 51137316141589. The reversal of 51137316141561 is 16514161373115.

51137316141561 is a `hidden beast` number, since 5 + 1 + 1 + 3 + 73 + 1 + 6 + 14 + 1 + 561 = 666.

It is not a de Polignac number, because 51137316141561 - 2⁵ = 51137316141529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51137316141511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13165665 + ... + 16601486.

It is an arithmetic number, because the mean of its divisors is an integer number (3314681521424).

Almost surely, 2^{51137316141561} is an apocalyptic number.

It is an amenable number.

51137316141561 is a deficient number, since it is larger than the sum of its proper divisors (28415040372615).

51137316141561 is a wasteful number, since it uses less digits than its factorization.

51137316141561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29781853 (or 29781850 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The spelling of 51137316141561 in words is "fifty-one trillion, one hundred thirty-seven billion, three hundred sixteen million, one hundred forty-one thousand, five hundred sixty-one".