12127085489 has 2 divisors, whose sum is σ = 12127085490. Its totient is φ = 12127085488.

The previous prime is 12127085461. The next prime is 12127085567. The reversal of 12127085489 is 98458072121.

12127085489 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., 6353365264 + 5773720225 = 79708^2 + 75985^2 .

It is a cyclic number.

It is not a de Polignac number, because 12127085489 - 2⁸ = 12127085233 is a prime.

It is not a weakly prime, because it can be changed into another prime (12127085459) 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, 6063542744 + 6063542745.

It is an arithmetic number, because the mean of its divisors is an integer number (6063542745).

Almost surely, 2^12127085489 is an apocalyptic number.

It is an amenable number.

12127085489 is a deficient number, since it is larger than the sum of its proper divisors (1).

12127085489 is an equidigital number, since it uses as much as digits as its factorization.

12127085489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 12127085489 in words is "twelve billion, one hundred twenty-seven million, eighty-five thousand, four hundred eighty-nine".