78788646336 has 56 divisors (see below), whose sum is σ = 208521659664. Its totient is φ = 26255319040.

The previous prime is 78788646329. The next prime is 78788646379. The reversal of 78788646336 is 63364688787.

It is a congruent number.

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, 630256 + ... + 744848.

Almost surely, 2^78788646336 is an apocalyptic number.

It is an amenable number.

78788646336 is an abundant number, since it is smaller than the sum of its proper divisors (129733013328).

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

78788646336 is a wasteful number, since it uses less digits than its factorization.

78788646336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118189 (or 118179 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 66.

The spelling of 78788646336 in words is "seventy-eight billion, seven hundred eighty-eight million, six hundred forty-six thousand, three hundred thirty-six".