79938806580 has 384 divisors, whose sum is σ = 273129615360. Its totient is φ = 19322634240.

The previous prime is 79938806573. The next prime is 79938806581. The reversal of 79938806580 is 8560883997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79938806581) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 73136514 + ... + 73137606.

It is an arithmetic number, because the mean of its divisors is an integer number (711275040).

Almost surely, 2^79938806580 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 79938806580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136564807680).

79938806580 is an abundant number, since it is smaller than the sum of its proper divisors (193190808780).

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

79938806580 is a wasteful number, since it uses less digits than its factorization.

79938806580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416 (or 1408 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 79938806580 in words is "seventy-nine billion, nine hundred thirty-eight million, eight hundred six thousand, five hundred eighty".