13487873172 has 12 divisors (see below), whose sum is σ = 31471704096. Its totient is φ = 4495957720.

The previous prime is 13487873171. The next prime is 13487873177. The reversal of 13487873172 is 27137878431.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13487873171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561994704 + ... + 561994727.

It is an arithmetic number, because the mean of its divisors is an integer number (2622642008).

Almost surely, 2^13487873172 is an apocalyptic number.

13487873172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13487873172 is an abundant number, since it is smaller than the sum of its proper divisors (17983830924).

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

13487873172 is a wasteful number, since it uses less digits than its factorization.

13487873172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123989438 (or 1123989436 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 51.

The spelling of 13487873172 in words is "thirteen billion, four hundred eighty-seven million, eight hundred seventy-three thousand, one hundred seventy-two".