14639647140 has 36 divisors (see below), whose sum is σ = 44406930204. Its totient is φ = 3903905856.

The previous prime is 14639647133. The next prime is 14639647163. The reversal of 14639647140 is 4174693641.

14639647140 is a `hidden beast` number, since 1 + 4 + 639 + 6 + 4 + 7 + 1 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10316058624 + 4323588516 = 101568^2 + 65754^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40665507 + ... + 40665866.

It is an arithmetic number, because the mean of its divisors is an integer number (1233525839).

Almost surely, 2^14639647140 is an apocalyptic number.

14639647140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14639647140 is an abundant number, since it is smaller than the sum of its proper divisors (29767283064).

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

14639647140 is a wasteful number, since it uses less digits than its factorization.

14639647140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81331388 (or 81331383 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 14639647140 in words is "fourteen billion, six hundred thirty-nine million, six hundred forty-seven thousand, one hundred forty".