13889680443 has 8 divisors (see below), whose sum is σ = 20577304400. Its totient is φ = 9259786944.

The previous prime is 13889680439. The next prime is 13889680451. The reversal of 13889680443 is 34408698831.

13889680443 is a `hidden beast` number, since 1 + 38 + 8 + 96 + 80 + 443 = 666.

It is not a de Polignac number, because 13889680443 - 2² = 13889680439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13889680443.

It is not an unprimeable number, because it can be changed into a prime (13889680403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257216278 + ... + 257216331.

It is an arithmetic number, because the mean of its divisors is an integer number (2572163050).

Almost surely, 2^13889680443 is an apocalyptic number.

13889680443 is a deficient number, since it is larger than the sum of its proper divisors (6687623957).

13889680443 is an equidigital number, since it uses as much as digits as its factorization.

13889680443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514432618 (or 514432612 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 13889680443 in words is "thirteen billion, eight hundred eighty-nine million, six hundred eighty thousand, four hundred forty-three".