39688872912 has 320 divisors, whose sum is σ = 129591705600. Its totient is φ = 11529008640.

The previous prime is 39688872907. The next prime is 39688872953. The reversal of 39688872912 is 21927888693.

39688872912 is a `hidden beast` number, since 396 + 88 + 87 + 2 + 91 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 39688872912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45988993 + ... + 45989855.

It is an arithmetic number, because the mean of its divisors is an integer number (404974080).

Almost surely, 2^39688872912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39688872912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64795852800).

39688872912 is an abundant number, since it is smaller than the sum of its proper divisors (89902832688).

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

39688872912 is a wasteful number, since it uses less digits than its factorization.

39688872912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343 (or 1331 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The spelling of 39688872912 in words is "thirty-nine billion, six hundred eighty-eight million, eight hundred seventy-two thousand, nine hundred twelve".