12258558409 has 2 divisors, whose sum is σ = 12258558410. Its totient is φ = 12258558408.

The previous prime is 12258558401. The next prime is 12258558437. The reversal of 12258558409 is 90485585221.

12258558409 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., 10465290000 + 1793268409 = 102300^2 + 42347^2 .

It is a cyclic number.

It is not a de Polignac number, because 12258558409 - 2³ = 12258558401 is a prime.

It is a super-2 number, since 2×12258558409² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12258558401) 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, 6129279204 + 6129279205.

It is an arithmetic number, because the mean of its divisors is an integer number (6129279205).

Almost surely, 2^12258558409 is an apocalyptic number.

It is an amenable number.

12258558409 is a deficient number, since it is larger than the sum of its proper divisors (1).

12258558409 is an equidigital number, since it uses as much as digits as its factorization.

12258558409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152000, while the sum is 49.

The spelling of 12258558409 in words is "twelve billion, two hundred fifty-eight million, five hundred fifty-eight thousand, four hundred nine".