39996039782015 has 8 divisors (see below), whose sum is σ = 49165863537168. Its totient is φ = 31216421293120.

The previous prime is 39996039781969. The next prime is 39996039782029. The reversal of 39996039782015 is 51028793069993.

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

It is not a de Polignac number, because 39996039782015 - 2¹² = 39996039777919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39996039782015.

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, 97551316337 + ... + 97551316746.

It is an arithmetic number, because the mean of its divisors is an integer number (6145732942146).

Almost surely, 2^{39996039782015} is an apocalyptic number.

39996039782015 is a deficient number, since it is larger than the sum of its proper divisors (9169823755153).

39996039782015 is a wasteful number, since it uses less digits than its factorization.

39996039782015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195102633129.

The product of its (nonzero) digits is 198404640, while the sum is 71.

The spelling of 39996039782015 in words is "thirty-nine trillion, nine hundred ninety-six billion, thirty-nine million, seven hundred eighty-two thousand, fifteen".