56677877665 has 16 divisors (see below), whose sum is σ = 68545751040. Its totient is φ = 44988662080.

The previous prime is 56677877603. The next prime is 56677877687.

56677877665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56677877665 - 2¹³ = 56677869473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56677877594 and 56677877603.

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, 295212 + ... + 447778.

It is an arithmetic number, because the mean of its divisors is an integer number (4284109440).

Almost surely, 2^56677877665 is an apocalyptic number.

It is an amenable number.

56677877665 is a deficient number, since it is larger than the sum of its proper divisors (11867873375).

56677877665 is a wasteful number, since it uses less digits than its factorization.

56677877665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153152.

The product of its digits is 622339200, while the sum is 70.

The spelling of 56677877665 in words is "fifty-six billion, six hundred seventy-seven million, eight hundred seventy-seven thousand, six hundred sixty-five".