564434459381 has 4 divisors (see below), whose sum is σ = 607852494732. Its totient is φ = 521016424032.

The previous prime is 564434459353. The next prime is 564434459383. The reversal of 564434459381 is 183954434465.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87595873156 + 476838586225 = 295966^2 + 690535^2 .

It is not a de Polignac number, because 564434459381 - 2²⁶ = 564367350517 is a prime.

It is a super-2 number, since 2×564434459381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564434459383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21709017656 + ... + 21709017681.

It is an arithmetic number, because the mean of its divisors is an integer number (151963123683).

Almost surely, 2^564434459381 is an apocalyptic number.

It is an amenable number.

564434459381 is a deficient number, since it is larger than the sum of its proper divisors (43418035351).

564434459381 is a wasteful number, since it uses less digits than its factorization.

564434459381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43418035350.

The product of its digits is 24883200, while the sum is 56.

The spelling of 564434459381 in words is "five hundred sixty-four billion, four hundred thirty-four million, four hundred fifty-nine thousand, three hundred eighty-one".