78602320866 has 8 divisors (see below), whose sum is σ = 157204641744. Its totient is φ = 26200773620.

The previous prime is 78602320843. The next prime is 78602320879. The reversal of 78602320866 is 66802320687.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

78602320866 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6550193400 + ... + 6550193411.

It is an arithmetic number, because the mean of its divisors is an integer number (19650580218).

Almost surely, 2^78602320866 is an apocalyptic number.

78602320866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78602320866 is a wasteful number, since it uses less digits than its factorization.

78602320866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13100386816.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 78602320866 in words is "seventy-eight billion, six hundred two million, three hundred twenty thousand, eight hundred sixty-six".