15613232560 has 20 divisors (see below), whose sum is σ = 36300765888. Its totient is φ = 6245292992.

The previous prime is 15613232549. The next prime is 15613232603. The reversal of 15613232560 is 6523231651.

It is a tau number, because it is divible by the number of its divisors (20).

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, 97582624 + ... + 97582783.

Almost surely, 2^15613232560 is an apocalyptic number.

15613232560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15613232560 is an abundant number, since it is smaller than the sum of its proper divisors (20687533328).

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

15613232560 is a wasteful number, since it uses less digits than its factorization.

15613232560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195165420 (or 195165414 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

Subtracting from 15613232560 its reverse (6523231651), we obtain a palindrome (9090000909).

The spelling of 15613232560 in words is "fifteen billion, six hundred thirteen million, two hundred thirty-two thousand, five hundred sixty".