13868320985 has 16 divisors (see below), whose sum is σ = 17219442240. Its totient is φ = 10709845440.

The previous prime is 13868320981. The next prime is 13868320987. The reversal of 13868320985 is 58902386831.

It is not a de Polignac number, because 13868320985 - 2² = 13868320981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13868320981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1148630 + ... + 1160640.

It is an arithmetic number, because the mean of its divisors is an integer number (1076215140).

Almost surely, 2^13868320985 is an apocalyptic number.

It is an amenable number.

13868320985 is a deficient number, since it is larger than the sum of its proper divisors (3351121255).

13868320985 is a wasteful number, since it uses less digits than its factorization.

13868320985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20008.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 13868320985 in words is "thirteen billion, eight hundred sixty-eight million, three hundred twenty thousand, nine hundred eighty-five".