561259641915 has 128 divisors (see below), whose sum is σ = 1147300208640. Its totient is φ = 255014179200.

The previous prime is 561259641889. The next prime is 561259641937. The reversal of 561259641915 is 519146952165.

561259641915 is a `hidden beast` number, since 5 + 6 + 1 + 2 + 596 + 41 + 9 + 1 + 5 = 666.

It is not a de Polignac number, because 561259641915 - 2⁹ = 561259641403 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 108537280 + ... + 108542450.

It is an arithmetic number, because the mean of its divisors is an integer number (8963282880).

Almost surely, 2^561259641915 is an apocalyptic number.

561259641915 is an abundant number, since it is smaller than the sum of its proper divisors (586040566725).

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

561259641915 is a wasteful number, since it uses less digits than its factorization.

561259641915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5870 (or 5864 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 54.

The spelling of 561259641915 in words is "five hundred sixty-one billion, two hundred fifty-nine million, six hundred forty-one thousand, nine hundred fifteen".