56602555129 has 2 divisors, whose sum is σ = 56602555130. Its totient is φ = 56602555128.

The previous prime is 56602555127. The next prime is 56602555159. The reversal of 56602555129 is 92155520665.

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., 41503060729 + 15099494400 = 203723^2 + 122880^2 .

It is a cyclic number.

It is not a de Polignac number, because 56602555129 - 2¹ = 56602555127 is a prime.

Together with 56602555127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56602555127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28301277564 + 28301277565.

It is an arithmetic number, because the mean of its divisors is an integer number (28301277565).

Almost surely, 2^56602555129 is an apocalyptic number.

It is an amenable number.

56602555129 is a deficient number, since it is larger than the sum of its proper divisors (1).

56602555129 is an equidigital number, since it uses as much as digits as its factorization.

56602555129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 56602555129 in words is "fifty-six billion, six hundred two million, five hundred fifty-five thousand, one hundred twenty-nine".