12779233011972 has 72 divisors (see below), whose sum is σ = 36918906280256. Its totient is φ = 3651098462784.

The previous prime is 12779233011971. The next prime is 12779233011991. The reversal of 12779233011972 is 27911033297721.

12779233011972 is a `hidden beast` number, since 127 + 7 + 9 + 2 + 330 + 119 + 72 = 666.

12779233011972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12779233011971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7722723 + ... + 9230325.

Almost surely, 2^{12779233011972} is an apocalyptic number.

12779233011972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12779233011972 is an abundant number, since it is smaller than the sum of its proper divisors (24139673268284).

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

12779233011972 is a wasteful number, since it uses less digits than its factorization.

12779233011972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541257 (or 1541252 counting only the distinct ones).

The product of its (nonzero) digits is 2000376, while the sum is 54.

The spelling of 12779233011972 in words is "twelve trillion, seven hundred seventy-nine billion, two hundred thirty-three million, eleven thousand, nine hundred seventy-two".