561573131442568 has 16 divisors (see below), whose sum is σ = 1203370995948480. Its totient is φ = 240674199189648.

The previous prime is 561573131442497. The next prime is 561573131442683. The reversal of 561573131442568 is 865244131375165.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5014045816396 + ... + 5014045816507.

It is an arithmetic number, because the mean of its divisors is an integer number (75210687246780).

Almost surely, 2^{561573131442568} is an apocalyptic number.

It is an amenable number.

561573131442568 is an abundant number, since it is smaller than the sum of its proper divisors (641797864505912).

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

561573131442568 is a wasteful number, since it uses less digits than its factorization.

561573131442568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10028091632916 (or 10028091632912 counting only the distinct ones).

The product of its digits is 72576000, while the sum is 61.

The spelling of 561573131442568 in words is "five hundred sixty-one trillion, five hundred seventy-three billion, one hundred thirty-one million, four hundred forty-two thousand, five hundred sixty-eight".