56856065865 has 16 divisors (see below), whose sum is σ = 91024447488. Its totient is φ = 30304987776.

The previous prime is 56856065831. The next prime is 56856065869.

56856065865 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56856065865 - 2⁶ = 56856065801 is a prime.

It is a super-2 number, since 2×56856065865² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56856065799 and 56856065808.

It is not an unprimeable number, because it can be changed into a prime (56856065869) 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, 1114684 + ... + 1164573.

It is an arithmetic number, because the mean of its divisors is an integer number (5689027968).

Almost surely, 2^56856065865 is an apocalyptic number.

It is an amenable number.

56856065865 is a deficient number, since it is larger than the sum of its proper divisors (34168381623).

56856065865 is a wasteful number, since it uses less digits than its factorization.

56856065865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280928.

The product of its (nonzero) digits is 51840000, while the sum is 60.

The spelling of 56856065865 in words is "fifty-six billion, eight hundred fifty-six million, sixty-five thousand, eight hundred sixty-five".