564123542531 has 4 divisors (see below), whose sum is σ = 567716686272. Its totient is φ = 560530398792.

The previous prime is 564123542503. The next prime is 564123542533. The reversal of 564123542531 is 135245321465.

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

It is a cyclic number.

It is not a de Polignac number, because 564123542531 - 2²⁶ = 564056433667 is a prime.

It is a super-2 number, since 2×564123542531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564123542533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1796571635 + ... + 1796571948.

It is an arithmetic number, because the mean of its divisors is an integer number (141929171568).

Almost surely, 2^564123542531 is an apocalyptic number.

564123542531 is a deficient number, since it is larger than the sum of its proper divisors (3593143741).

564123542531 is a wasteful number, since it uses less digits than its factorization.

564123542531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593143740.

The product of its digits is 432000, while the sum is 41.

Adding to 564123542531 its reverse (135245321465), we get a palindrome (699368863996).

The spelling of 564123542531 in words is "five hundred sixty-four billion, one hundred twenty-three million, five hundred forty-two thousand, five hundred thirty-one".