15172574520 has 64 divisors (see below), whose sum is σ = 46289232000. Its totient is φ = 3977441408.

The previous prime is 15172574489. The next prime is 15172574537. The reversal of 15172574520 is 2547527151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1064430 + ... + 1078589.

It is an arithmetic number, because the mean of its divisors is an integer number (723269250).

Almost surely, 2^15172574520 is an apocalyptic number.

15172574520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15172574520 is an abundant number, since it is smaller than the sum of its proper divisors (31116657480).

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

15172574520 is a wasteful number, since it uses less digits than its factorization.

15172574520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143092 (or 2143088 counting only the distinct ones).

The product of its (nonzero) digits is 98000, while the sum is 39.

The spelling of 15172574520 in words is "fifteen billion, one hundred seventy-two million, five hundred seventy-four thousand, five hundred twenty".