564544055657 has 2 divisors, whose sum is σ = 564544055658. Its totient is φ = 564544055656.

The previous prime is 564544055633. The next prime is 564544055659. The reversal of 564544055657 is 756550445465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 558518570281 + 6025485376 = 747341^2 + 77624^2 .

It is a cyclic number.

It is not a de Polignac number, because 564544055657 - 2²⁶ = 564476946793 is a prime.

Together with 564544055659, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (564544055659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282272027828 + 282272027829.

It is an arithmetic number, because the mean of its divisors is an integer number (282272027829).

Almost surely, 2^564544055657 is an apocalyptic number.

It is an amenable number.

564544055657 is a deficient number, since it is larger than the sum of its proper divisors (1).

564544055657 is an equidigital number, since it uses as much as digits as its factorization.

564544055657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400000, while the sum is 56.

The spelling of 564544055657 in words is "five hundred sixty-four billion, five hundred forty-four million, fifty-five thousand, six hundred fifty-seven".