56156134463647 has 2 divisors, whose sum is σ = 56156134463648. Its totient is φ = 56156134463646.

The previous prime is 56156134463603. The next prime is 56156134463711. The reversal of 56156134463647 is 74636443165165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56156134463647 - 2⁷ = 56156134463519 is a prime.

It is a super-2 number, since 2×56156134463647² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56156134463147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28078067231823 + 28078067231824.

It is an arithmetic number, because the mean of its divisors is an integer number (28078067231824).

Almost surely, 2^{56156134463647} is an apocalyptic number.

56156134463647 is a deficient number, since it is larger than the sum of its proper divisors (1).

56156134463647 is an equidigital number, since it uses as much as digits as its factorization.

56156134463647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 130636800, while the sum is 61.

The spelling of 56156134463647 in words is "fifty-six trillion, one hundred fifty-six billion, one hundred thirty-four million, four hundred sixty-three thousand, six hundred forty-seven".