13663983894 has 64 divisors (see below), whose sum is σ = 31605921792. Its totient is φ = 3898713600.

The previous prime is 13663983889. The next prime is 13663983913. The reversal of 13663983894 is 49838936631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14547 + ... + 165950.

It is an arithmetic number, because the mean of its divisors is an integer number (493842528).

Almost surely, 2^13663983894 is an apocalyptic number.

13663983894 is an abundant number, since it is smaller than the sum of its proper divisors (17941937898).

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

13663983894 is a wasteful number, since it uses less digits than its factorization.

13663983894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180581.

The product of its digits is 20155392, while the sum is 60.

The spelling of 13663983894 in words is "thirteen billion, six hundred sixty-three million, nine hundred eighty-three thousand, eight hundred ninety-four".