564261309999 has 32 divisors (see below), whose sum is σ = 850380016640. Its totient is φ = 369703357056.

The previous prime is 564261309967. The next prime is 564261310027. The reversal of 564261309999 is 999903162465.

564261309999 is a `hidden beast` number, since 5 + 6 + 4 + 2 + 613 + 0 + 9 + 9 + 9 + 9 = 666.

It is not a de Polignac number, because 564261309999 - 2⁵ = 564261309967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564261309929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 423114 + ... + 1143480.

It is an arithmetic number, because the mean of its divisors is an integer number (26574375520).

Almost surely, 2^564261309999 is an apocalyptic number.

564261309999 is a deficient number, since it is larger than the sum of its proper divisors (286118706641).

564261309999 is a wasteful number, since it uses less digits than its factorization.

564261309999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720876 (or 720870 counting only the distinct ones).

The product of its (nonzero) digits is 28343520, while the sum is 63.

The spelling of 564261309999 in words is "five hundred sixty-four billion, two hundred sixty-one million, three hundred nine thousand, nine hundred ninety-nine".