13618973388432 has 40 divisors (see below), whose sum is σ = 35627694106240. Its totient is φ = 4482193772160.

The previous prime is 13618973388379. The next prime is 13618973388469. The reversal of 13618973388432 is 23488337981631.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1795746919 + ... + 1795754502.

It is an arithmetic number, because the mean of its divisors is an integer number (890692352656).

Almost surely, 2^{13618973388432} is an apocalyptic number.

13618973388432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13618973388432 is an abundant number, since it is smaller than the sum of its proper divisors (22008720717808).

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

13618973388432 is a wasteful number, since it uses less digits than its factorization.

13618973388432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3591501511 (or 3591501505 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 66.

The spelling of 13618973388432 in words is "thirteen trillion, six hundred eighteen billion, nine hundred seventy-three million, three hundred eighty-eight thousand, four hundred thirty-two".