78688347248 has 80 divisors (see below), whose sum is σ = 177968085504. Its totient is φ = 33008152320.

The previous prime is 78688347233. The next prime is 78688347319. The reversal of 78688347248 is 84274388687.

It is a congruent number.

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, 1144733 + ... + 1211523.

Almost surely, 2^78688347248 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 78688347248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88984042752).

78688347248 is an abundant number, since it is smaller than the sum of its proper divisors (99279738256).

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

78688347248 is a wasteful number, since it uses less digits than its factorization.

78688347248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67030 (or 67024 counting only the distinct ones).

The product of its digits is 115605504, while the sum is 65.

The spelling of 78688347248 in words is "seventy-eight billion, six hundred eighty-eight million, three hundred forty-seven thousand, two hundred forty-eight".