12158464999589 has 2 divisors, whose sum is σ = 12158464999590. Its totient is φ = 12158464999588.

The previous prime is 12158464999559. The next prime is 12158464999627. The reversal of 12158464999589 is 98599946485121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10459131147364 + 1699333852225 = 3234058^2 + 1303585^2 .

It is a cyclic number.

It is not a de Polignac number, because 12158464999589 - 2¹² = 12158464995493 is a prime.

It is a super-2 number, since 2×12158464999589² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12158464999559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6079232499794 + 6079232499795.

It is an arithmetic number, because the mean of its divisors is an integer number (6079232499795).

Almost surely, 2^{12158464999589} is an apocalyptic number.

It is an amenable number.

12158464999589 is a deficient number, since it is larger than the sum of its proper divisors (1).

12158464999589 is an equidigital number, since it uses as much as digits as its factorization.

12158464999589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2015539200, while the sum is 80.

The spelling of 12158464999589 in words is "twelve trillion, one hundred fifty-eight billion, four hundred sixty-four million, nine hundred ninety-nine thousand, five hundred eighty-nine".