56156676757 has 2 divisors, whose sum is σ = 56156676758. Its totient is φ = 56156676756.

The previous prime is 56156676749. The next prime is 56156676787. The reversal of 56156676757 is 75767665165.

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., 56156676676 + 81 = 236974^2 + 9^2 .

It is a cyclic number.

It is not a de Polignac number, because 56156676757 - 2³ = 56156676749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56156676695 and 56156676704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56156676787) by changing a digit.

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 as a sum of consecutive naturals, namely, 28078338378 + 28078338379.

It is an arithmetic number, because the mean of its divisors is an integer number (28078338379).

Almost surely, 2^56156676757 is an apocalyptic number.

It is an amenable number.

56156676757 is a deficient number, since it is larger than the sum of its proper divisors (1).

56156676757 is an equidigital number, since it uses as much as digits as its factorization.

56156676757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55566000, while the sum is 61.

The spelling of 56156676757 in words is "fifty-six billion, one hundred fifty-six million, six hundred seventy-six thousand, seven hundred fifty-seven".