56865856865 has 16 divisors (see below), whose sum is σ = 71952995520. Its totient is φ = 43024870080.

The previous prime is 56865856847. The next prime is 56865856877.

56865856865 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56865856865 - 2⁸ = 56865856609 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56865856795 and 56865856804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454106 + ... + 565635.

It is an arithmetic number, because the mean of its divisors is an integer number (4497062220).

Almost surely, 2^56865856865 is an apocalyptic number.

It is an amenable number.

56865856865 is a deficient number, since it is larger than the sum of its proper divisors (15087138655).

56865856865 is a wasteful number, since it uses less digits than its factorization.

56865856865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020352.

The product of its digits is 414720000, while the sum is 68.

The spelling of 56865856865 in words is "fifty-six billion, eight hundred sixty-five million, eight hundred fifty-six thousand, eight hundred sixty-five".