39968149440 has 56 divisors (see below), whose sum is σ = 126898877520. Its totient is φ = 10658172928.

The previous prime is 39968149439. The next prime is 39968149477. The reversal of 39968149440 is 4494186993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20815785 + ... + 20817704.

Almost surely, 2^39968149440 is an apocalyptic number.

39968149440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39968149440 is an abundant number, since it is smaller than the sum of its proper divisors (86930728080).

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

39968149440 is a wasteful number, since it uses less digits than its factorization.

39968149440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41633509 (or 41633499 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 57.

The spelling of 39968149440 in words is "thirty-nine billion, nine hundred sixty-eight million, one hundred forty-nine thousand, four hundred forty".