56655255666 has 32 divisors (see below), whose sum is σ = 119988019008. Its totient is φ = 17772392960.

The previous prime is 56655255619. The next prime is 56655255691. The reversal of 56655255666 is 66655255665.

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 15 ways as a sum of consecutive naturals, for example, 1274881 + ... + 1318571.

It is an arithmetic number, because the mean of its divisors is an integer number (3749625594).

Almost surely, 2^56655255666 is an apocalyptic number.

56655255666 is an abundant number, since it is smaller than the sum of its proper divisors (63332763342).

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

56655255666 is a wasteful number, since it uses less digits than its factorization.

56655255666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56426.

The product of its digits is 48600000, while the sum is 57.

Subtracting 56655255666 from its reverse (66655255665), we obtain a palindrome (9999999999).

The spelling of 56655255666 in words is "fifty-six billion, six hundred fifty-five million, two hundred fifty-five thousand, six hundred sixty-six".