79902982878720 has 640 divisors, whose sum is σ = 267733932681600. Its totient is φ = 20302242250752.

The previous prime is 79902982878713. The next prime is 79902982878721. The reversal of 79902982878720 is 2787828920997.

79902982878720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (640).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79902982878721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11040894942 + ... + 11040902178.

It is an arithmetic number, because the mean of its divisors is an integer number (418334269815).

Almost surely, 2^{79902982878720} 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 79902982878720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133866966340800).

79902982878720 is an abundant number, since it is smaller than the sum of its proper divisors (187830949802880).

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

79902982878720 is a wasteful number, since it uses less digits than its factorization.

79902982878720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7938 (or 7922 counting only the distinct ones).

The product of its (nonzero) digits is 1024192512, while the sum is 78.

The spelling of 79902982878720 in words is "seventy-nine trillion, nine hundred two billion, nine hundred eighty-two million, eight hundred seventy-eight thousand, seven hundred twenty".