12279394479912 has 128 divisors (see below), whose sum is σ = 36829552435200. Its totient is φ = 3337678022400.

The previous prime is 12279394479773. The next prime is 12279394479929. The reversal of 12279394479912 is 21997449397221.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19674039 + ... + 20288582.

It is an arithmetic number, because the mean of its divisors is an integer number (287730878400).

Almost surely, 2^{12279394479912} is an apocalyptic number.

12279394479912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12279394479912 is an abundant number, since it is smaller than the sum of its proper divisors (24550157955288).

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

12279394479912 is a wasteful number, since it uses less digits than its factorization.

12279394479912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39962727 (or 39962723 counting only the distinct ones).

The product of its digits is 123451776, while the sum is 69.

The spelling of 12279394479912 in words is "twelve trillion, two hundred seventy-nine billion, three hundred ninety-four million, four hundred seventy-nine thousand, nine hundred twelve".