12972731179 has 4 divisors (see below), whose sum is σ = 13248746784. Its totient is φ = 12696715576.

The previous prime is 12972731117. The next prime is 12972731257. The reversal of 12972731179 is 97113727921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12972731179 - 2¹¹ = 12972729131 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12972731279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138007732 + ... + 138007825.

It is an arithmetic number, because the mean of its divisors is an integer number (3312186696).

Almost surely, 2^12972731179 is an apocalyptic number.

12972731179 is a deficient number, since it is larger than the sum of its proper divisors (276015605).

12972731179 is an equidigital number, since it uses as much as digits as its factorization.

12972731179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276015604.

The product of its digits is 333396, while the sum is 49.

The spelling of 12972731179 in words is "twelve billion, nine hundred seventy-two million, seven hundred thirty-one thousand, one hundred seventy-nine".