12918732679 has 2 divisors, whose sum is σ = 12918732680. Its totient is φ = 12918732678.

The previous prime is 12918732661. The next prime is 12918732709. The reversal of 12918732679 is 97623781921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12918732679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12918730679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6459366339 + 6459366340.

It is an arithmetic number, because the mean of its divisors is an integer number (6459366340).

Almost surely, 2^12918732679 is an apocalyptic number.

12918732679 is a deficient number, since it is larger than the sum of its proper divisors (1).

12918732679 is an equidigital number, since it uses as much as digits as its factorization.

12918732679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 55.

The spelling of 12918732679 in words is "twelve billion, nine hundred eighteen million, seven hundred thirty-two thousand, six hundred seventy-nine".