78801328672 has 24 divisors (see below), whose sum is σ = 169243763472. Its totient is φ = 35818785600.

The previous prime is 78801328663. The next prime is 78801328679. The reversal of 78801328672 is 27682310887.

It is not an unprimeable number, because it can be changed into a prime (78801328679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111933354 + ... + 111934057.

It is an arithmetic number, because the mean of its divisors is an integer number (7051823478).

Almost surely, 2^78801328672 is an apocalyptic number.

It is an amenable number.

78801328672 is an abundant number, since it is smaller than the sum of its proper divisors (90442434800).

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

78801328672 is a wasteful number, since it uses less digits than its factorization.

78801328672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223867432 (or 223867424 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 78801328672 in words is "seventy-eight billion, eight hundred one million, three hundred twenty-eight thousand, six hundred seventy-two".