78832908864 has 168 divisors, whose sum is σ = 228743606520. Its totient is φ = 25955500032.

The previous prime is 78832908859. The next prime is 78832908877. The reversal of 78832908864 is 46880923887.

It can be written as a sum of positive squares in 4 ways, for example, as 4199040000 + 74633868864 = 64800^2 + 273192^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22160974 + ... + 22164530.

Almost surely, 2^78832908864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78832908864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114371803260).

78832908864 is an abundant number, since it is smaller than the sum of its proper divisors (149910697656).

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

78832908864 is a wasteful number, since it uses less digits than its factorization.

78832908864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4037 (or 4024 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 63.

The spelling of 78832908864 in words is "seventy-eight billion, eight hundred thirty-two million, nine hundred eight thousand, eight hundred sixty-four".