39996039782018 has 8 divisors (see below), whose sum is σ = 61929351920640. Its totient is φ = 19352922475140.

The previous prime is 39996039781969. The next prime is 39996039782029. The reversal of 39996039782018 is 81028793069993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322548707858 + ... + 322548707981.

It is an arithmetic number, because the mean of its divisors is an integer number (7741168990080).

Almost surely, 2^{39996039782018} is an apocalyptic number.

39996039782018 is a deficient number, since it is larger than the sum of its proper divisors (21933312138622).

39996039782018 is a wasteful number, since it uses less digits than its factorization.

39996039782018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645097415872.

The product of its (nonzero) digits is 317447424, while the sum is 74.

The spelling of 39996039782018 in words is "thirty-nine trillion, nine hundred ninety-six billion, thirty-nine million, seven hundred eighty-two thousand, eighteen".