56616111636 has 96 divisors (see below), whose sum is σ = 159913055232. Its totient is φ = 15219187200.

The previous prime is 56616111599. The next prime is 56616111647. The reversal of 56616111636 is 63611161665.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5779935 + ... + 5789721.

It is an arithmetic number, because the mean of its divisors is an integer number (1665760992).

Almost surely, 2^56616111636 is an apocalyptic number.

It is an amenable number.

56616111636 is an abundant number, since it is smaller than the sum of its proper divisors (103296943596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56616111636 is a wasteful number, since it uses less digits than its factorization.

56616111636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13869 (or 13867 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The spelling of 56616111636 in words is "fifty-six billion, six hundred sixteen million, one hundred eleven thousand, six hundred thirty-six".