564326663508 has 36 divisors (see below), whose sum is σ = 1440616095828. Its totient is φ = 186246422400.

The previous prime is 564326663503. The next prime is 564326663561. The reversal of 564326663508 is 805366623465.

It can be written as a sum of positive squares in 2 ways, for example, as 442900898064 + 121425765444 = 665508^2 + 348462^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77599041 + ... + 77606312.

It is an arithmetic number, because the mean of its divisors is an integer number (40017113773).

Almost surely, 2^564326663508 is an apocalyptic number.

It is an amenable number.

564326663508 is an abundant number, since it is smaller than the sum of its proper divisors (876289432320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

564326663508 is a wasteful number, since it uses less digits than its factorization.

564326663508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155205464 (or 155205459 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 54.

The spelling of 564326663508 in words is "five hundred sixty-four billion, three hundred twenty-six million, six hundred sixty-three thousand, five hundred eight".