56776616602157 has 2 divisors, whose sum is σ = 56776616602158. Its totient is φ = 56776616602156.

The previous prime is 56776616602117. The next prime is 56776616602201. The reversal of 56776616602157 is 75120661667765.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53690951962921 + 3085664639236 = 7327411^2 + 1756606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56776616602157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56776616602093 and 56776616602102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56776616602117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28388308301078 + 28388308301079.

It is an arithmetic number, because the mean of its divisors is an integer number (28388308301079).

Almost surely, 2^{56776616602157} is an apocalyptic number.

It is an amenable number.

56776616602157 is a deficient number, since it is larger than the sum of its proper divisors (1).

56776616602157 is an equidigital number, since it uses as much as digits as its factorization.

56776616602157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 133358400, while the sum is 65.

The spelling of 56776616602157 in words is "fifty-six trillion, seven hundred seventy-six billion, six hundred sixteen million, six hundred two thousand, one hundred fifty-seven".