13872023985 has 16 divisors (see below), whose sum is σ = 22198499136. Its totient is φ = 7397325888.

The previous prime is 13872023983. The next prime is 13872023989. The reversal of 13872023985 is 58932027831.

It is a happy number.

It is not a de Polignac number, because 13872023985 - 2¹ = 13872023983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13872023981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43467 + ... + 172143.

It is an arithmetic number, because the mean of its divisors is an integer number (1387406196).

Almost surely, 2^13872023985 is an apocalyptic number.

13872023985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13872023985 is a deficient number, since it is larger than the sum of its proper divisors (8326475151).

13872023985 is a wasteful number, since it uses less digits than its factorization.

13872023985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135872.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 13872023985 in words is "thirteen billion, eight hundred seventy-two million, twenty-three thousand, nine hundred eighty-five".