561573342270831 has 64 divisors (see below), whose sum is σ = 853084001088000. Its totient is φ = 325470171962880.

The previous prime is 561573342270799. The next prime is 561573342270859. The reversal of 561573342270831 is 138072243375165.

It is a happy number.

It is not a de Polignac number, because 561573342270831 - 2⁵ = 561573342270799 is a prime.

It is a super-2 number, since 2×561573342270831² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561573342270131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 267979501 + ... + 270066953.

It is an arithmetic number, because the mean of its divisors is an integer number (13329437517000).

Almost surely, 2^{561573342270831} is an apocalyptic number.

561573342270831 is a deficient number, since it is larger than the sum of its proper divisors (291510658817169).

561573342270831 is a wasteful number, since it uses less digits than its factorization.

561573342270831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090184.

The product of its (nonzero) digits is 25401600, while the sum is 57.

The spelling of 561573342270831 in words is "five hundred sixty-one trillion, five hundred seventy-three billion, three hundred forty-two million, two hundred seventy thousand, eight hundred thirty-one".