13891527664 has 40 divisors (see below), whose sum is σ = 30905644928. Its totient is φ = 5925286080.

The previous prime is 13891527659. The next prime is 13891527701. The reversal of 13891527664 is 46672519831.

It is a congruent number.

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, 270282 + ... + 317545.

Almost surely, 2^13891527664 is an apocalyptic number.

13891527664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13891527664 is an abundant number, since it is smaller than the sum of its proper divisors (17014117264).

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

13891527664 is a wasteful number, since it uses less digits than its factorization.

13891527664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588053 (or 588047 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

The spelling of 13891527664 in words is "thirteen billion, eight hundred ninety-one million, five hundred twenty-seven thousand, six hundred sixty-four".