12566144579 has 2 divisors, whose sum is σ = 12566144580. Its totient is φ = 12566144578.

The previous prime is 12566144567. The next prime is 12566144581. The reversal of 12566144579 is 97544166521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12566144579 - 2²⁰ = 12565096003 is a prime.

Together with 12566144581, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12566144179) 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, 6283072289 + 6283072290.

It is an arithmetic number, because the mean of its divisors is an integer number (6283072290).

Almost surely, 2^12566144579 is an apocalyptic number.

12566144579 is a deficient number, since it is larger than the sum of its proper divisors (1).

12566144579 is an equidigital number, since it uses as much as digits as its factorization.

12566144579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 50.

The spelling of 12566144579 in words is "twelve billion, five hundred sixty-six million, one hundred forty-four thousand, five hundred seventy-nine".