79308139212 has 36 divisors (see below), whose sum is σ = 200891920320. Its totient is φ = 26380850592.

The previous prime is 79308139187. The next prime is 79308139217. The reversal of 79308139212 is 21293180397.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (79308139217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2282343 + ... + 2316830.

It is an arithmetic number, because the mean of its divisors is an integer number (5580331120).

Almost surely, 2^79308139212 is an apocalyptic number.

It is an amenable number.

79308139212 is an abundant number, since it is smaller than the sum of its proper divisors (121583781108).

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

79308139212 is a wasteful number, since it uses less digits than its factorization.

79308139212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4599662 (or 4599657 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 79308139212 in words is "seventy-nine billion, three hundred eight million, one hundred thirty-nine thousand, two hundred twelve".