56616657604147 has 2 divisors, whose sum is σ = 56616657604148. Its totient is φ = 56616657604146.

The previous prime is 56616657604123. The next prime is 56616657604153. The reversal of 56616657604147 is 74140675661665.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56616657604147 - 2⁷ = 56616657604019 is a prime.

It is not a weakly prime, because it can be changed into another prime (56616657604547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28308328802073 + 28308328802074.

It is an arithmetic number, because the mean of its divisors is an integer number (28308328802074).

Almost surely, 2^{56616657604147} is an apocalyptic number.

56616657604147 is a deficient number, since it is larger than the sum of its proper divisors (1).

56616657604147 is an equidigital number, since it uses as much as digits as its factorization.

56616657604147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 152409600, while the sum is 64.

The spelling of 56616657604147 in words is "fifty-six trillion, six hundred sixteen billion, six hundred fifty-seven million, six hundred four thousand, one hundred forty-seven".