639113706000 has 1280 divisors, whose sum is σ = 2869770608640. Its totient is φ = 132088320000.

The previous prime is 639113705999. The next prime is 639113706041. The reversal of 639113706000 is 607311936.

639113706000 is a `hidden beast` number, since 6 + 3 + 9 + 11 + 37 + 0 + 600 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1168397727 + ... + 1168398273.

It is an arithmetic number, because the mean of its divisors is an integer number (2242008288).

Almost surely, 2^639113706000 is an apocalyptic number.

639113706000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 639113706000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1434885304320).

639113706000 is an abundant number, since it is smaller than the sum of its proper divisors (2230656902640).

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

639113706000 is a wasteful number, since it uses less digits than its factorization.

639113706000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 856 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The spelling of 639113706000 in words is "six hundred thirty-nine billion, one hundred thirteen million, seven hundred six thousand".