56639599963 has 32 divisors (see below), whose sum is σ = 62205939200. Its totient is φ = 51381133056.

The previous prime is 56639599949. The next prime is 56639599981. The reversal of 56639599963 is 36999593665.

It is a cyclic number.

It is not a de Polignac number, because 56639599963 - 2²⁹ = 56102729051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56639599892 and 56639599901.

It is not an unprimeable number, because it can be changed into a prime (56639599943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31765570 + ... + 31767352.

It is an arithmetic number, because the mean of its divisors is an integer number (1943935600).

Almost surely, 2^56639599963 is an apocalyptic number.

56639599963 is a deficient number, since it is larger than the sum of its proper divisors (5566339237).

56639599963 is a wasteful number, since it uses less digits than its factorization.

56639599963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531.

The product of its digits is 318864600, while the sum is 70.

The spelling of 56639599963 in words is "fifty-six billion, six hundred thirty-nine million, five hundred ninety-nine thousand, nine hundred sixty-three".