56611630508977 has 2 divisors, whose sum is σ = 56611630508978. Its totient is φ = 56611630508976.

The previous prime is 56611630508893. The next prime is 56611630508999. The reversal of 56611630508977 is 77980503611665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53034573210256 + 3577057298721 = 7282484^2 + 1891311^2 .

It is a cyclic number.

It is not a de Polignac number, because 56611630508977 - 2²⁷ = 56611496291249 is a prime.

It is not a weakly prime, because it can be changed into another prime (56611630500977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28305815254488 + 28305815254489.

It is an arithmetic number, because the mean of its divisors is an integer number (28305815254489).

Almost surely, 2^{56611630508977} is an apocalyptic number.

It is an amenable number.

56611630508977 is a deficient number, since it is larger than the sum of its proper divisors (1).

56611630508977 is an equidigital number, since it uses as much as digits as its factorization.

56611630508977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57153600, while the sum is 64.

The spelling of 56611630508977 in words is "fifty-six trillion, six hundred eleven billion, six hundred thirty million, five hundred eight thousand, nine hundred seventy-seven".