639634713322 has 32 divisors (see below), whose sum is σ = 1062447148224. Its totient is φ = 286363123200.

The previous prime is 639634713269. The next prime is 639634713331. The reversal of 639634713322 is 223317436936.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12002728 + ... + 12055900.

It is an arithmetic number, because the mean of its divisors is an integer number (33201473382).

Almost surely, 2^639634713322 is an apocalyptic number.

639634713322 is a deficient number, since it is larger than the sum of its proper divisors (422812434902).

639634713322 is a wasteful number, since it uses less digits than its factorization.

639634713322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61414.

The product of its digits is 2939328, while the sum is 49.

The spelling of 639634713322 in words is "six hundred thirty-nine billion, six hundred thirty-four million, seven hundred thirteen thousand, three hundred twenty-two".