78814308660 has 96 divisors (see below), whose sum is σ = 224675942400. Its totient is φ = 20637402240.

The previous prime is 78814308653. The next prime is 78814308691. The reversal of 78814308660 is 6680341887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3212721 + ... + 3237159.

It is an arithmetic number, because the mean of its divisors is an integer number (2340374400).

Almost surely, 2^78814308660 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 78814308660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112337971200).

78814308660 is an abundant number, since it is smaller than the sum of its proper divisors (145861633740).

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

78814308660 is a wasteful number, since it uses less digits than its factorization.

78814308660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25421 (or 25419 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 78814308660 in words is "seventy-eight billion, eight hundred fourteen million, three hundred eight thousand, six hundred sixty".