56626666662665 has 16 divisors (see below), whose sum is σ = 74132491778496. Its totient is φ = 41181342945600.

The previous prime is 56626666662649. The next prime is 56626666662673.

56626666662665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56626666662665 - 2⁴ = 56626666662649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56626666662592 and 56626666662601.

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, 19736567 + ... + 22422876.

It is an arithmetic number, because the mean of its divisors is an integer number (4633280736156).

Almost surely, 2^{56626666662665} is an apocalyptic number.

56626666662665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56626666662665 is a deficient number, since it is larger than the sum of its proper divisors (17505825115831).

56626666662665 is a wasteful number, since it uses less digits than its factorization.

56626666662665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42183880.

The product of its digits is 6046617600, while the sum is 74.

The spelling of 56626666662665 in words is "fifty-six trillion, six hundred twenty-six billion, six hundred sixty-six million, six hundred sixty-two thousand, six hundred sixty-five".