561500565670 has 64 divisors (see below), whose sum is σ = 1134459406080. Its totient is φ = 198331459200.

The previous prime is 561500565667. The next prime is 561500565671. The reversal of 561500565670 is 76565005165.

It is a self number, because there is not a number n which added to its sum of digits gives 561500565670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561500565671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 528201 + ... + 1184059.

It is an arithmetic number, because the mean of its divisors is an integer number (17725928220).

Almost surely, 2^561500565670 is an apocalyptic number.

561500565670 is an abundant number, since it is smaller than the sum of its proper divisors (572958840410).

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

561500565670 is a wasteful number, since it uses less digits than its factorization.

561500565670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656101.

The product of its (nonzero) digits is 945000, while the sum is 46.

The spelling of 561500565670 in words is "five hundred sixty-one billion, five hundred million, five hundred sixty-five thousand, six hundred seventy".