15513242372 has 12 divisors (see below), whose sum is σ = 27162681756. Its totient is φ = 7752476160.

The previous prime is 15513242369. The next prime is 15513242383. The reversal of 15513242372 is 27324231551.

It can be written as a sum of positive squares in 2 ways, for example, as 1884080836 + 13629161536 = 43406^2 + 116744^2 .

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, 1027829 + ... + 1042812.

It is an arithmetic number, because the mean of its divisors is an integer number (2263556813).

Almost surely, 2^15513242372 is an apocalyptic number.

It is an amenable number.

15513242372 is a deficient number, since it is larger than the sum of its proper divisors (11649439384).

15513242372 is a wasteful number, since it uses less digits than its factorization.

15513242372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072518 (or 2072516 counting only the distinct ones).

The product of its digits is 50400, while the sum is 35.

The spelling of 15513242372 in words is "fifteen billion, five hundred thirteen million, two hundred forty-two thousand, three hundred seventy-two".