13157039520 has 96 divisors (see below), whose sum is σ = 46049653440. Its totient is φ = 3508542720.

The previous prime is 13157039503. The next prime is 13157039521. The reversal of 13157039520 is 2593075131.

13157039520 is a `hidden beast` number, since 1 + 3 + 1 + 570 + 39 + 52 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (13157039521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1518486 + ... + 1527125.

It is an arithmetic number, because the mean of its divisors is an integer number (479683890).

Almost surely, 2^13157039520 is an apocalyptic number.

13157039520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13157039520 is an abundant number, since it is smaller than the sum of its proper divisors (32892613920).

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

13157039520 is a wasteful number, since it uses less digits than its factorization.

13157039520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045635 (or 3045621 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The spelling of 13157039520 in words is "thirteen billion, one hundred fifty-seven million, thirty-nine thousand, five hundred twenty".