56756865765 has 16 divisors (see below), whose sum is σ = 93265337088. Its totient is φ = 29452211136.

The previous prime is 56756865761. The next prime is 56756865779.

56756865765 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56756865765 - 2² = 56756865761 is a prime.

It is a super-2 number, since 2×56756865765² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56756865696 and 56756865705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56756865761) 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, 51131757 + ... + 51132866.

It is an arithmetic number, because the mean of its divisors is an integer number (5829083568).

Almost surely, 2^56756865765 is an apocalyptic number.

It is an amenable number.

56756865765 is a deficient number, since it is larger than the sum of its proper divisors (36508471323).

56756865765 is a wasteful number, since it uses less digits than its factorization.

56756865765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102264668.

The product of its digits is 317520000, while the sum is 66.

The spelling of 56756865765 in words is "fifty-six billion, seven hundred fifty-six million, eight hundred sixty-five thousand, seven hundred sixty-five".