39920137368 has 64 divisors (see below), whose sum is σ = 100622964960. Its totient is φ = 13197213696.

The previous prime is 39920137351. The next prime is 39920137379. The reversal of 39920137368 is 86373102993.

39920137368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 39920137368.

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, 3917496 + ... + 3927672.

Almost surely, 2^39920137368 is an apocalyptic number.

It is an amenable number.

39920137368 is an abundant number, since it is smaller than the sum of its proper divisors (60702827592).

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

39920137368 is a wasteful number, since it uses less digits than its factorization.

39920137368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11516 (or 11512 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 51.

The spelling of 39920137368 in words is "thirty-nine billion, nine hundred twenty million, one hundred thirty-seven thousand, three hundred sixty-eight".