639848232072 has 96 divisors (see below), whose sum is σ = 1986093607680. Its totient is φ = 182295843840.

The previous prime is 639848232043. The next prime is 639848232157. The reversal of 639848232072 is 270232848936.

639848232072 is a `hidden beast` number, since 6 + 3 + 98 + 482 + 3 + 2 + 0 + 72 = 666.

639848232072 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1620304 + ... + 1976127.

It is an arithmetic number, because the mean of its divisors is an integer number (20688475080).

Almost surely, 2^639848232072 is an apocalyptic number.

It is an amenable number.

639848232072 is an abundant number, since it is smaller than the sum of its proper divisors (1346245375608).

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

639848232072 is a wasteful number, since it uses less digits than its factorization.

639848232072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596803 (or 3596796 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 639848232072 in words is "six hundred thirty-nine billion, eight hundred forty-eight million, two hundred thirty-two thousand, seventy-two".