15157215873 has 12 divisors (see below), whose sum is σ = 21896260308. Its totient is φ = 10103654880.

The previous prime is 15157215859. The next prime is 15157215877. The reversal of 15157215873 is 37851275151.

15157215873 is a `hidden beast` number, since 1 + 5 + 1 + 572 + 1 + 5 + 8 + 73 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6727772529 + 8429443344 = 82023^2 + 91812^2 .

It is not a de Polignac number, because 15157215873 - 2²⁶ = 15090107009 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15157215877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9090 + ... + 174347.

It is an arithmetic number, because the mean of its divisors is an integer number (1824688359).

Almost surely, 2^15157215873 is an apocalyptic number.

It is an amenable number.

15157215873 is a deficient number, since it is larger than the sum of its proper divisors (6739044435).

15157215873 is a wasteful number, since it uses less digits than its factorization.

15157215873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192624 (or 192621 counting only the distinct ones).

The product of its digits is 294000, while the sum is 45.

The spelling of 15157215873 in words is "fifteen billion, one hundred fifty-seven million, two hundred fifteen thousand, eight hundred seventy-three".