56624642665 has 16 divisors (see below), whose sum is σ = 71927380800. Its totient is φ = 42720495552.

The previous prime is 56624642653. The next prime is 56624642677.

56624642665 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (56624642653) and next prime (56624642677).

It is a cyclic number.

It is not a de Polignac number, because 56624642665 - 2⁷ = 56624642537 is a prime.

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, 4534635 + ... + 4547104.

It is an arithmetic number, because the mean of its divisors is an integer number (4495461300).

Almost surely, 2^56624642665 is an apocalyptic number.

It is an amenable number.

56624642665 is a deficient number, since it is larger than the sum of its proper divisors (15302738135).

56624642665 is a wasteful number, since it uses less digits than its factorization.

56624642665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9081816.

The product of its digits is 12441600, while the sum is 52.

The spelling of 56624642665 in words is "fifty-six billion, six hundred twenty-four million, six hundred forty-two thousand, six hundred sixty-five".