564256368899 has 16 divisors (see below), whose sum is σ = 579245569632. Its totient is φ = 549430073088.

The previous prime is 564256368859. The next prime is 564256368911. The reversal of 564256368899 is 998863652465.

It is a Cunningham number, because it is equal to 751170²-1.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-564256368899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564256368829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39804977 + ... + 39819149.

It is an arithmetic number, because the mean of its divisors is an integer number (36202848102).

Almost surely, 2^564256368899 is an apocalyptic number.

564256368899 is a deficient number, since it is larger than the sum of its proper divisors (14989200733).

564256368899 is a wasteful number, since it uses less digits than its factorization.

564256368899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19846.

The product of its digits is 671846400, while the sum is 71.

The spelling of 564256368899 in words is "five hundred sixty-four billion, two hundred fifty-six million, three hundred sixty-eight thousand, eight hundred ninety-nine".