564326663509 has 16 divisors (see below), whose sum is σ = 667460851200. Its totient is φ = 466835330304.

The previous prime is 564326663503. The next prime is 564326663561. The reversal of 564326663509 is 905366623465.

It is a happy number.

It is not a de Polignac number, because 564326663509 - 2¹⁷ = 564326532437 is a prime.

It is a super-2 number, since 2×564326663509² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 564326663509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564326663503) 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 in 15 ways as a sum of consecutive naturals, for example, 84429 + ... + 1065730.

It is an arithmetic number, because the mean of its divisors is an integer number (41716303200).

Almost surely, 2^564326663509 is an apocalyptic number.

It is an amenable number.

564326663509 is a deficient number, since it is larger than the sum of its proper divisors (103134187691).

564326663509 is a wasteful number, since it uses less digits than its factorization.

564326663509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152612.

The product of its (nonzero) digits is 20995200, while the sum is 55.

The spelling of 564326663509 in words is "five hundred sixty-four billion, three hundred twenty-six million, six hundred sixty-three thousand, five hundred nine".