78996666288 has 80 divisors (see below), whose sum is σ = 206718912000. Its totient is φ = 25992046080.

The previous prime is 78996666283. The next prime is 78996666323. The reversal of 78996666288 is 88266669987.

It is not an unprimeable number, because it can be changed into a prime (78996666283) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2543493 + ... + 2574363.

It is an arithmetic number, because the mean of its divisors is an integer number (2583986400).

Almost surely, 2^78996666288 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 78996666288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103359456000).

78996666288 is an abundant number, since it is smaller than the sum of its proper divisors (127722245712).

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

78996666288 is a wasteful number, since it uses less digits than its factorization.

78996666288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31570 (or 31564 counting only the distinct ones).

The product of its digits is 752467968, while the sum is 75.

The spelling of 78996666288 in words is "seventy-eight billion, nine hundred ninety-six million, six hundred sixty-six thousand, two hundred eighty-eight".