56666688888888 has 64 divisors (see below), whose sum is σ = 169515736000800. Its totient is φ = 17435904272640.

The previous prime is 56666688888871. The next prime is 56666688888961. The reversal of 56666688888888 is 88888888666665.

56666688888888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56666688888888² (a number of 28 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

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, 10090219573 + ... + 10090225188.

Almost surely, 2^{56666688888888} is an apocalyptic number.

It is an amenable number.

56666688888888 is an abundant number, since it is smaller than the sum of its proper divisors (112849047111912).

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

56666688888888 is a wasteful number, since it uses less digits than its factorization.

56666688888888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20180444789 (or 20180444779 counting only the distinct ones).

The product of its digits is 652298158080, while the sum is 99.

The spelling of 56666688888888 in words is "fifty-six trillion, six hundred sixty-six billion, six hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-eight".