12189905126 has 64 divisors (see below), whose sum is σ = 23170560000. Its totient is φ = 4789471680.

The previous prime is 12189905071. The next prime is 12189905159. The reversal of 12189905126 is 62150998121.

12189905126 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 388970 + ... + 419138.

It is an arithmetic number, because the mean of its divisors is an integer number (362040000).

Almost surely, 2^12189905126 is an apocalyptic number.

12189905126 is a deficient number, since it is larger than the sum of its proper divisors (10980654874).

12189905126 is a wasteful number, since it uses less digits than its factorization.

12189905126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30242 (or 30228 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 44.

The spelling of 12189905126 in words is "twelve billion, one hundred eighty-nine million, nine hundred five thousand, one hundred twenty-six".