56776616602553 has 2 divisors, whose sum is σ = 56776616602554. Its totient is φ = 56776616602552.

The previous prime is 56776616602549. The next prime is 56776616602579. The reversal of 56776616602553 is 35520661667765.

It is a happy number.

56776616602553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47188477755769 + 9588138846784 = 6869387^2 + 3096472^2 .

It is a cyclic number.

It is not a de Polignac number, because 56776616602553 - 2² = 56776616602549 is a prime.

It is a super-2 number, since 2×56776616602553² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56776616602553.

It is not a weakly prime, because it can be changed into another prime (56776616602513) by changing a digit.

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 as a sum of consecutive naturals, namely, 28388308301276 + 28388308301277.

It is an arithmetic number, because the mean of its divisors is an integer number (28388308301277).

Almost surely, 2^{56776616602553} is an apocalyptic number.

It is an amenable number.

56776616602553 is a deficient number, since it is larger than the sum of its proper divisors (1).

56776616602553 is an equidigital number, since it uses as much as digits as its factorization.

56776616602553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768000, while the sum is 65.

The spelling of 56776616602553 in words is "fifty-six trillion, seven hundred seventy-six billion, six hundred sixteen million, six hundred two thousand, five hundred fifty-three".