56816685331 has 32 divisors (see below), whose sum is σ = 68217982976. Its totient is φ = 46294416000.

The previous prime is 56816685301. The next prime is 56816685361. The reversal of 56816685331 is 13358661865.

It is an interprime number because it is at equal distance from previous prime (56816685301) and next prime (56816685361).

It is not a de Polignac number, because 56816685331 - 2⁹ = 56816684819 is a prime.

It is a super-2 number, since 2×56816685331² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56816685301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11685841 + ... + 11690701.

It is an arithmetic number, because the mean of its divisors is an integer number (2131811968).

Almost surely, 2^56816685331 is an apocalyptic number.

56816685331 is a deficient number, since it is larger than the sum of its proper divisors (11401297645).

56816685331 is a wasteful number, since it uses less digits than its factorization.

56816685331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5843.

The product of its digits is 3110400, while the sum is 52.

The spelling of 56816685331 in words is "fifty-six billion, eight hundred sixteen million, six hundred eighty-five thousand, three hundred thirty-one".