12558687979 has 2 divisors, whose sum is σ = 12558687980. Its totient is φ = 12558687978.

The previous prime is 12558687971. The next prime is 12558688007. The reversal of 12558687979 is 97978685521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12558687979 - 2³ = 12558687971 is a prime.

It is not a weakly prime, because it can be changed into another prime (12558687971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6279343989 + 6279343990.

It is an arithmetic number, because the mean of its divisors is an integer number (6279343990).

Almost surely, 2^12558687979 is an apocalyptic number.

12558687979 is a deficient number, since it is larger than the sum of its proper divisors (1).

12558687979 is an equidigital number, since it uses as much as digits as its factorization.

12558687979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76204800, while the sum is 67.

The spelling of 12558687979 in words is "twelve billion, five hundred fifty-eight million, six hundred eighty-seven thousand, nine hundred seventy-nine".