139650431904 has 36 divisors (see below), whose sum is σ = 397130916546. Its totient is φ = 46550143872.

The previous prime is 139650431897. The next prime is 139650431939. The reversal of 139650431904 is 409134056931.

139650431904 is a `hidden beast` number, since 139 + 6 + 504 + 3 + 1 + 9 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 129297776400 + 10352655504 = 359580^2 + 101748^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 139650431904.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 242448379 + ... + 242448954.

Almost surely, 2^139650431904 is an apocalyptic number.

It is an amenable number.

139650431904 is an abundant number, since it is smaller than the sum of its proper divisors (257480484642).

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

139650431904 is a wasteful number, since it uses less digits than its factorization.

139650431904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484897349 (or 484897338 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 139650431904 in words is "one hundred thirty-nine billion, six hundred fifty million, four hundred thirty-one thousand, nine hundred four".