564632393794561 has 4 divisors (see below), whose sum is σ = 589181628307392. Its totient is φ = 540083159281732.

The previous prime is 564632393794543. The next prime is 564632393794627. The reversal of 564632393794561 is 165497393236465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 564632393794561 - 2¹⁷ = 564632393663489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (564632393734561) 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 3 ways as a sum of consecutive naturals, for example, 12274617256381 + ... + 12274617256426.

It is an arithmetic number, because the mean of its divisors is an integer number (147295407076848).

Almost surely, 2^{564632393794561} is an apocalyptic number.

It is an amenable number.

564632393794561 is a deficient number, since it is larger than the sum of its proper divisors (24549234512831).

564632393794561 is a wasteful number, since it uses less digits than its factorization.

564632393794561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24549234512830.

The product of its digits is 2645395200, while the sum is 73.

The spelling of 564632393794561 in words is "five hundred sixty-four trillion, six hundred thirty-two billion, three hundred ninety-three million, seven hundred ninety-four thousand, five hundred sixty-one".