56999899965 has 16 divisors (see below), whose sum is σ = 95999832000. Its totient is φ = 28799949312.

The previous prime is 56999899951. The next prime is 56999899973.

56999899965 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56999899965 - 2⁵ = 56999899933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99999540 + ... + 100000109.

It is an arithmetic number, because the mean of its divisors is an integer number (5999989500).

Almost surely, 2^56999899965 is an apocalyptic number.

It is an amenable number.

56999899965 is a deficient number, since it is larger than the sum of its proper divisors (38999932035).

56999899965 is a wasteful number, since it uses less digits than its factorization.

56999899965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199999676.

The product of its digits is 3826375200, while the sum is 84.

The spelling of 56999899965 in words is "fifty-six billion, nine hundred ninety-nine million, eight hundred ninety-nine thousand, nine hundred sixty-five".