79722938880 has 960 divisors, whose sum is σ = 325015447680. Its totient is φ = 18409586688.

The previous prime is 79722938879. The next prime is 79722938923. The reversal of 79722938880 is 8883922797.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (960).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 259683687 + ... + 259683993.

It is an arithmetic number, because the mean of its divisors is an integer number (338557758).

Almost surely, 2^79722938880 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 79722938880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162507723840).

79722938880 is an abundant number, since it is smaller than the sum of its proper divisors (245292508800).

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

79722938880 is a wasteful number, since it uses less digits than its factorization.

79722938880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 79722938880 in words is "seventy-nine billion, seven hundred twenty-two million, nine hundred thirty-eight thousand, eight hundred eighty".