561573131442555 has 16 divisors (see below), whose sum is σ = 907240476430080. Its totient is φ = 296597848062048.

The previous prime is 561573131442497. The next prime is 561573131442683. The reversal of 561573131442555 is 555244131375165.

It is not a de Polignac number, because 561573131442555 - 2⁸ = 561573131442299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561573131442495 and 561573131442504.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181738875945 + ... + 181738879034.

It is an arithmetic number, because the mean of its divisors is an integer number (56702529776880).

Almost surely, 2^{561573131442555} is an apocalyptic number.

561573131442555 is a deficient number, since it is larger than the sum of its proper divisors (345667344987525).

561573131442555 is a wasteful number, since it uses less digits than its factorization.

561573131442555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363477755090.

The product of its digits is 37800000, while the sum is 57.

The spelling of 561573131442555 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 fifty-five".