12118617379 has 4 divisors (see below), whose sum is σ = 13220309880. Its totient is φ = 11016924880.

The previous prime is 12118617323. The next prime is 12118617383. The reversal of 12118617379 is 97371681121.

12118617379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12118617379 - 2²⁵ = 12085062947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12118617319) 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 3 ways as a sum of consecutive naturals, for example, 550846234 + ... + 550846255.

It is an arithmetic number, because the mean of its divisors is an integer number (3305077470).

Almost surely, 2^12118617379 is an apocalyptic number.

12118617379 is a deficient number, since it is larger than the sum of its proper divisors (1101692501).

12118617379 is a wasteful number, since it uses less digits than its factorization.

12118617379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101692500.

The product of its digits is 127008, while the sum is 46.

The spelling of 12118617379 in words is "twelve billion, one hundred eighteen million, six hundred seventeen thousand, three hundred seventy-nine".