561554375580 has 72 divisors (see below), whose sum is σ = 1858234485744. Its totient is φ = 136134393600.

The previous prime is 561554375563. The next prime is 561554375609. The reversal of 561554375580 is 85573455165.

561554375580 is a `hidden beast` number, since 5 + 6 + 1 + 5 + 54 + 3 + 7 + 5 + 580 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141804681 + ... + 141808640.

It is an arithmetic number, because the mean of its divisors is an integer number (25808812302).

Almost surely, 2^561554375580 is an apocalyptic number.

It is an amenable number.

561554375580 is an abundant number, since it is smaller than the sum of its proper divisors (1296680110164).

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

561554375580 is a wasteful number, since it uses less digits than its factorization.

561554375580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283613347 (or 283613342 counting only the distinct ones).

The product of its (nonzero) digits is 12600000, while the sum is 54.

The spelling of 561554375580 in words is "five hundred sixty-one billion, five hundred fifty-four million, three hundred seventy-five thousand, five hundred eighty".