12117892949 has 2 divisors, whose sum is σ = 12117892950. Its totient is φ = 12117892948.

The previous prime is 12117892939. The next prime is 12117892981. The reversal of 12117892949 is 94929871121.

It is a happy number.

12117892949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7853149924 + 4264743025 = 88618^2 + 65305^2 .

It is a cyclic number.

It is not a de Polignac number, because 12117892949 - 2⁸ = 12117892693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12117892949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12117892939) 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 as a sum of consecutive naturals, namely, 6058946474 + 6058946475.

It is an arithmetic number, because the mean of its divisors is an integer number (6058946475).

Almost surely, 2^12117892949 is an apocalyptic number.

It is an amenable number.

12117892949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12117892949 is an equidigital number, since it uses as much as digits as its factorization.

12117892949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 53.

The spelling of 12117892949 in words is "twelve billion, one hundred seventeen million, eight hundred ninety-two thousand, nine hundred forty-nine".