56776616602561 has 4 divisors (see below), whose sum is σ = 56899244284672. Its totient is φ = 56653988920452.

The previous prime is 56776616602553. The next prime is 56776616602579. The reversal of 56776616602561 is 16520661667765.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56776616602561 - 2³ = 56776616602553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56776616602493 and 56776616602502.

It is not an unprimeable number, because it can be changed into a prime (56776616602861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61313840361 + ... + 61313841286.

It is an arithmetic number, because the mean of its divisors is an integer number (14224811071168).

Almost surely, 2^{56776616602561} is an apocalyptic number.

It is an amenable number.

56776616602561 is a deficient number, since it is larger than the sum of its proper divisors (122627682111).

56776616602561 is a wasteful number, since it uses less digits than its factorization.

56776616602561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122627682110.

The product of its (nonzero) digits is 114307200, while the sum is 64.

The spelling of 56776616602561 in words is "fifty-six trillion, seven hundred seventy-six billion, six hundred sixteen million, six hundred two thousand, five hundred sixty-one".