3878917663998 has 96 divisors (see below), whose sum is σ = 9140602591008. Its totient is φ = 1087070423040.

The previous prime is 3878917663987. The next prime is 3878917664071. The reversal of 3878917663998 is 8993667198783.

3878917663998 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 3878917663998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 247711 + ... + 2796282.

It is an arithmetic number, because the mean of its divisors is an integer number (95214610323).

Almost surely, 2^{3878917663998} is an apocalyptic number.

3878917663998 is an abundant number, since it is smaller than the sum of its proper divisors (5261684927010).

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

3878917663998 is a wasteful number, since it uses less digits than its factorization.

3878917663998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044090 (or 3044059 counting only the distinct ones).

The product of its digits is 5925685248, while the sum is 84.

The spelling of 3878917663998 in words is "three trillion, eight hundred seventy-eight billion, nine hundred seventeen million, six hundred sixty-three thousand, nine hundred ninety-eight".