79686473244 has 72 divisors (see below), whose sum is σ = 216510391440. Its totient is φ = 22744560384.

The previous prime is 79686473189. The next prime is 79686473257. The reversal of 79686473244 is 44237468697.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 518272 + ... + 654200.

It is an arithmetic number, because the mean of its divisors is an integer number (3007088770).

Almost surely, 2^79686473244 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 79686473244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108255195720).

79686473244 is an abundant number, since it is smaller than the sum of its proper divisors (136823918196).

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

79686473244 is a wasteful number, since it uses less digits than its factorization.

79686473244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136947 (or 136938 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 60.

The spelling of 79686473244 in words is "seventy-nine billion, six hundred eighty-six million, four hundred seventy-three thousand, two hundred forty-four".