8139878028352 has 56 divisors (see below), whose sum is σ = 19055567029760. Its totient is φ = 3375986273280.

The previous prime is 8139878028343. The next prime is 8139878028371. The reversal of 8139878028352 is 2538208789318.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×8139878028352² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

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, 293040477 + ... + 293068252.

Almost surely, 2^{8139878028352} is an apocalyptic number.

It is an amenable number.

8139878028352 is an abundant number, since it is smaller than the sum of its proper divisors (10915689001408).

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

8139878028352 is a wasteful number, since it uses less digits than its factorization.

8139878028352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586108779 (or 586108769 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 64.

The spelling of 8139878028352 in words is "eight trillion, one hundred thirty-nine billion, eight hundred seventy-eight million, twenty-eight thousand, three hundred fifty-two".