13990664088 has 80 divisors (see below), whose sum is σ = 40020662880. Its totient is φ = 4564320192.

The previous prime is 13990664059. The next prime is 13990664111. The reversal of 13990664088 is 88046609931.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 199231 + ... + 260142.

It is an arithmetic number, because the mean of its divisors is an integer number (500258286).

Almost surely, 2^13990664088 is an apocalyptic number.

13990664088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13990664088 is an abundant number, since it is smaller than the sum of its proper divisors (26029998792).

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

13990664088 is a wasteful number, since it uses less digits than its factorization.

13990664088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459438 (or 459425 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 13990664088 in words is "thirteen billion, nine hundred ninety million, six hundred sixty-four thousand, eighty-eight".