56644244665 has 24 divisors (see below), whose sum is σ = 73265385600. Its totient is φ = 42016899744.

The previous prime is 56644244609. The next prime is 56644244707.

It is a happy number.

56644244665 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-56644244665 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 249015 + ... + 418684.

It is an arithmetic number, because the mean of its divisors is an integer number (3052724400).

Almost surely, 2^56644244665 is an apocalyptic number.

It is an amenable number.

56644244665 is a deficient number, since it is larger than the sum of its proper divisors (16621140935).

56644244665 is a wasteful number, since it uses less digits than its factorization.

56644244665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667789 (or 667770 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 52.

The spelling of 56644244665 in words is "fifty-six billion, six hundred forty-four million, two hundred forty-four thousand, six hundred sixty-five".