639911339000 has 64 divisors (see below), whose sum is σ = 1497747944160. Its totient is φ = 255903782400.

The previous prime is 639911338999. The next prime is 639911339017. The reversal of 639911339000 is 933119936.

It is a congruent 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, 4263227 + ... + 4410773.

Almost surely, 2^639911339000 is an apocalyptic number.

It is an amenable number.

639911339000 is an abundant number, since it is smaller than the sum of its proper divisors (857836605160).

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

639911339000 is a wasteful number, since it uses less digits than its factorization.

639911339000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151905 (or 151891 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 44.

The spelling of 639911339000 in words is "six hundred thirty-nine billion, nine hundred eleven million, three hundred thirty-nine thousand".