78791866884 has 48 divisors (see below), whose sum is σ = 207152346240. Its totient is φ = 25894038240.

The previous prime is 78791866861. The next prime is 78791866931. The reversal of 78791866884 is 48866819787.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5130039 + ... + 5145374.

It is an arithmetic number, because the mean of its divisors is an integer number (4315673880).

Almost surely, 2^78791866884 is an apocalyptic number.

It is an amenable number.

78791866884 is an abundant number, since it is smaller than the sum of its proper divisors (128360479356).

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

78791866884 is a wasteful number, since it uses less digits than its factorization.

78791866884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10275497 (or 10275489 counting only the distinct ones).

The product of its digits is 260112384, while the sum is 72.

The spelling of 78791866884 in words is "seventy-eight billion, seven hundred ninety-one million, eight hundred sixty-six thousand, eight hundred eighty-four".