56677895129 has 2 divisors, whose sum is σ = 56677895130. Its totient is φ = 56677895128.

The previous prime is 56677895117. The next prime is 56677895159. The reversal of 56677895129 is 92159877665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51256960000 + 5420935129 = 226400^2 + 73627^2 .

It is a cyclic number.

It is not a de Polignac number, because 56677895129 - 2²⁰ = 56676846553 is a prime.

It is not a weakly prime, because it can be changed into another prime (56677895159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28338947564 + 28338947565.

It is an arithmetic number, because the mean of its divisors is an integer number (28338947565).

Almost surely, 2^56677895129 is an apocalyptic number.

It is an amenable number.

56677895129 is a deficient number, since it is larger than the sum of its proper divisors (1).

56677895129 is an equidigital number, since it uses as much as digits as its factorization.

56677895129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57153600, while the sum is 65.

The spelling of 56677895129 in words is "fifty-six billion, six hundred seventy-seven million, eight hundred ninety-five thousand, one hundred twenty-nine".