561056060556 has 72 divisors (see below), whose sum is σ = 1438460229024. Its totient is φ = 184351265280.

The previous prime is 561056060527. The next prime is 561056060567. The reversal of 561056060556 is 655060650165.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 16947636 + ... + 16980708.

It is an arithmetic number, because the mean of its divisors is an integer number (19978614292).

Almost surely, 2^561056060556 is an apocalyptic number.

It is an amenable number.

561056060556 is an abundant number, since it is smaller than the sum of its proper divisors (877404168468).

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

561056060556 is a wasteful number, since it uses less digits than its factorization.

561056060556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39791 (or 39786 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 561056060556 in words is "five hundred sixty-one billion, fifty-six million, sixty thousand, five hundred fifty-six".