13667440408 has 16 divisors (see below), whose sum is σ = 25630640280. Its totient is φ = 6832603008.

The previous prime is 13667440399. The next prime is 13667440429. The reversal of 13667440408 is 80404476631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86466 + ... + 186577.

Almost surely, 2^13667440408 is an apocalyptic number.

It is an amenable number.

13667440408 is a deficient number, since it is larger than the sum of its proper divisors (11963199872).

13667440408 is a wasteful number, since it uses less digits than its factorization.

13667440408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279306 (or 279302 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 13667440408 in words is "thirteen billion, six hundred sixty-seven million, four hundred forty thousand, four hundred eight".