15561615596 has 12 divisors (see below), whose sum is σ = 27251151648. Its totient is φ = 7775572272.

The previous prime is 15561615547. The next prime is 15561615611. The reversal of 15561615596 is 69551616551.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1302191 + ... + 1314086.

It is an arithmetic number, because the mean of its divisors is an integer number (2270929304).

Almost surely, 2^15561615596 is an apocalyptic number.

It is an amenable number.

15561615596 is a deficient number, since it is larger than the sum of its proper divisors (11689536052).

15561615596 is a wasteful number, since it uses less digits than its factorization.

15561615596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617768 (or 2617766 counting only the distinct ones).

The product of its digits is 1215000, while the sum is 50.

The spelling of 15561615596 in words is "fifteen billion, five hundred sixty-one million, six hundred fifteen thousand, five hundred ninety-six".