39996039782017 has 16 divisors (see below), whose sum is σ = 43670841863040. Its totient is φ = 36327706748800.

The previous prime is 39996039781969. The next prime is 39996039782029. The reversal of 39996039782017 is 71028793069993.

It is a cyclic number.

It is not a de Polignac number, because 39996039782017 - 2⁷ = 39996039781889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39996039782047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400579533 + ... + 400679365.

It is an arithmetic number, because the mean of its divisors is an integer number (2729427616440).

Almost surely, 2^{39996039782017} is an apocalyptic number.

It is an amenable number.

39996039782017 is a deficient number, since it is larger than the sum of its proper divisors (3674802081023).

39996039782017 is a wasteful number, since it uses less digits than its factorization.

39996039782017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131864.

The product of its (nonzero) digits is 277766496, while the sum is 73.

The spelling of 39996039782017 in words is "thirty-nine trillion, nine hundred ninety-six billion, thirty-nine million, seven hundred eighty-two thousand, seventeen".