79929779380 has 48 divisors (see below), whose sum is σ = 189018708480. Its totient is φ = 28127779200.

The previous prime is 79929779353. The next prime is 79929779383. The reversal of 79929779380 is 8397792997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79929779383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5853135 + ... + 5866774.

It is an arithmetic number, because the mean of its divisors is an integer number (3937889760).

Almost surely, 2^79929779380 is an apocalyptic number.

It is an amenable number.

79929779380 is an abundant number, since it is smaller than the sum of its proper divisors (109088929100).

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

79929779380 is a wasteful number, since it uses less digits than its factorization.

79929779380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11719960 (or 11719958 counting only the distinct ones).

The product of its (nonzero) digits is 108020304, while the sum is 70.

The spelling of 79929779380 in words is "seventy-nine billion, nine hundred twenty-nine million, seven hundred seventy-nine thousand, three hundred eighty".