12289818450494 has 32 divisors (see below), whose sum is σ = 21192000399360. Its totient is φ = 5298000069600.

The previous prime is 12289818450491. The next prime is 12289818450517. The reversal of 12289818450494 is 49405481898221.

It is a super-2 number, since 2×12289818450494² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12289818450494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12289818450491) 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 in 15 ways as a sum of consecutive naturals, for example, 175163342 + ... + 175233489.

It is an arithmetic number, because the mean of its divisors is an integer number (662250012480).

Almost surely, 2^{12289818450494} is an apocalyptic number.

12289818450494 is a deficient number, since it is larger than the sum of its proper divisors (8902181948866).

12289818450494 is a wasteful number, since it uses less digits than its factorization.

12289818450494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350396936.

The product of its (nonzero) digits is 53084160, while the sum is 65.

The spelling of 12289818450494 in words is "twelve trillion, two hundred eighty-nine billion, eight hundred eighteen million, four hundred fifty thousand, four hundred ninety-four".