561565512260 has 12 divisors (see below), whose sum is σ = 1179287575788. Its totient is φ = 224626204896.

The previous prime is 561565512253. The next prime is 561565512269. The reversal of 561565512260 is 62215565165.

561565512260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 227132309056 + 334433203204 = 476584^2 + 578302^2 .

It is not an unprimeable number, because it can be changed into a prime (561565512269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14039137787 + ... + 14039137826.

It is an arithmetic number, because the mean of its divisors is an integer number (98273964649).

Almost surely, 2^561565512260 is an apocalyptic number.

It is an amenable number.

561565512260 is an abundant number, since it is smaller than the sum of its proper divisors (617722063528).

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

561565512260 is a wasteful number, since it uses less digits than its factorization.

561565512260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28078275622 (or 28078275620 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 44.

The spelling of 561565512260 in words is "five hundred sixty-one billion, five hundred sixty-five million, five hundred twelve thousand, two hundred sixty".