56505624631 has 4 divisors (see below), whose sum is σ = 56506124664. Its totient is φ = 56505124600.

The previous prime is 56505624613. The next prime is 56505624653. The reversal of 56505624631 is 13642650565.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13642650565 = 5 ⋅2728530113.

It is a cyclic number.

It is not a de Polignac number, because 56505624631 - 2¹⁷ = 56505493559 is a prime.

It is a super-2 number, since 2×56505624631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56505624671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8796 + ... + 336286.

It is an arithmetic number, because the mean of its divisors is an integer number (14126531166).

Almost surely, 2^56505624631 is an apocalyptic number.

56505624631 is a deficient number, since it is larger than the sum of its proper divisors (500033).

56505624631 is a wasteful number, since it uses less digits than its factorization.

56505624631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500032.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 56505624631 in words is "fifty-six billion, five hundred five million, six hundred twenty-four thousand, six hundred thirty-one".