56656651163 has 16 divisors (see below), whose sum is σ = 66082200000. Its totient is φ = 48555271296.

The previous prime is 56656651159. The next prime is 56656651193. The reversal of 56656651163 is 36115665665.

It is not a de Polignac number, because 56656651163 - 2² = 56656651159 is a prime.

It is a super-2 number, since 2×56656651163² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56656651193) 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 15 ways as a sum of consecutive naturals, for example, 4125953 + ... + 4139661.

It is an arithmetic number, because the mean of its divisors is an integer number (4130137500).

Almost surely, 2^56656651163 is an apocalyptic number.

56656651163 is a deficient number, since it is larger than the sum of its proper divisors (9425548837).

56656651163 is a wasteful number, since it uses less digits than its factorization.

56656651163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25779 (or 25765 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 50.

The spelling of 56656651163 in words is "fifty-six billion, six hundred fifty-six million, six hundred fifty-one thousand, one hundred sixty-three".