12289818450439 has 2 divisors, whose sum is σ = 12289818450440. Its totient is φ = 12289818450438.

The previous prime is 12289818450407. The next prime is 12289818450473. The reversal of 12289818450439 is 93405481898221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12289818450439 - 2⁵ = 12289818450407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12289818451439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6144909225219 + 6144909225220.

It is an arithmetic number, because the mean of its divisors is an integer number (6144909225220).

Almost surely, 2^{12289818450439} is an apocalyptic number.

12289818450439 is a deficient number, since it is larger than the sum of its proper divisors (1).

12289818450439 is an equidigital number, since it uses as much as digits as its factorization.

12289818450439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39813120, while the sum is 64.

The spelling of 12289818450439 in words is "twelve trillion, two hundred eighty-nine billion, eight hundred eighteen million, four hundred fifty thousand, four hundred thirty-nine".