14639957680 has 40 divisors (see below), whose sum is σ = 34468776000. Its totient is φ = 5781854208.

The previous prime is 14639957671. The next prime is 14639957681. The reversal of 14639957680 is 8675993641.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (14639957681) 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, 1151905 + ... + 1164544.

It is an arithmetic number, because the mean of its divisors is an integer number (861719400).

Almost surely, 2^14639957680 is an apocalyptic number.

14639957680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14639957680 is an abundant number, since it is smaller than the sum of its proper divisors (19828818320).

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

14639957680 is a wasteful number, since it uses less digits than its factorization.

14639957680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316541 (or 2316535 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 14639957680 in words is "fourteen billion, six hundred thirty-nine million, nine hundred fifty-seven thousand, six hundred eighty".