561573131427066 has 32 divisors (see below), whose sum is σ = 1225445915390400. Its totient is φ = 170146530798080.

The previous prime is 561573131427053. The next prime is 561573131427073. The reversal of 561573131427066 is 660724131375165.

It is a junction number, because it is equal to n+sod(n) for n = 561573131426997 and 561573131427015.

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, 678217911 + ... + 679045418.

It is an arithmetic number, because the mean of its divisors is an integer number (38295184855950).

Almost surely, 2^{561573131427066} is an apocalyptic number.

561573131427066 is an abundant number, since it is smaller than the sum of its proper divisors (663872783963334).

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

561573131427066 is a wasteful number, since it uses less digits than its factorization.

561573131427066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357269614.

The product of its (nonzero) digits is 19051200, while the sum is 57.

The spelling of 561573131427066 in words is "five hundred sixty-one trillion, five hundred seventy-three billion, one hundred thirty-one million, four hundred twenty-seven thousand, sixty-six".