13997178672 has 20 divisors (see below), whose sum is σ = 36159378360. Its totient is φ = 4665726208.

The previous prime is 13997178649. The next prime is 13997178677. The reversal of 13997178672 is 27687179931.

It is not an unprimeable number, because it can be changed into a prime (13997178677) 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, 145803897 + ... + 145803992.

It is an arithmetic number, because the mean of its divisors is an integer number (1807968918).

Almost surely, 2^13997178672 is an apocalyptic number.

13997178672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13997178672 is an abundant number, since it is smaller than the sum of its proper divisors (22162199688).

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

13997178672 is a wasteful number, since it uses less digits than its factorization.

13997178672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291607900 (or 291607894 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 60.

The spelling of 13997178672 in words is "thirteen billion, nine hundred ninety-seven million, one hundred seventy-eight thousand, six hundred seventy-two".