56611866786 has 32 divisors (see below), whose sum is σ = 114041281536. Its totient is φ = 18734850000.

The previous prime is 56611866743. The next prime is 56611866791. The reversal of 56611866786 is 68766811665.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407931 + ... + 528801.

It is an arithmetic number, because the mean of its divisors is an integer number (3563790048).

Almost surely, 2^56611866786 is an apocalyptic number.

56611866786 is an abundant number, since it is smaller than the sum of its proper divisors (57429414750).

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

56611866786 is a wasteful number, since it uses less digits than its factorization.

56611866786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121438.

The product of its digits is 17418240, while the sum is 60.

The spelling of 56611866786 in words is "fifty-six billion, six hundred eleven million, eight hundred sixty-six thousand, seven hundred eighty-six".