564456815957 has 2 divisors, whose sum is σ = 564456815958. Its totient is φ = 564456815956.

The previous prime is 564456815953. The next prime is 564456816013. The reversal of 564456815957 is 759518654465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 522311189521 + 42145626436 = 722711^2 + 205294^2 .

It is a cyclic number.

It is not a de Polignac number, because 564456815957 - 2² = 564456815953 is a prime.

It is a super-2 number, since 2×564456815957² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 564456815893 and 564456815902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564456815953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282228407978 + 282228407979.

It is an arithmetic number, because the mean of its divisors is an integer number (282228407979).

Almost surely, 2^564456815957 is an apocalyptic number.

It is an amenable number.

564456815957 is a deficient number, since it is larger than the sum of its proper divisors (1).

564456815957 is an equidigital number, since it uses as much as digits as its factorization.

564456815957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440000, while the sum is 65.

The spelling of 564456815957 in words is "five hundred sixty-four billion, four hundred fifty-six million, eight hundred fifteen thousand, nine hundred fifty-seven".