12650869866 has 16 divisors (see below), whose sum is σ = 25335439488. Its totient is φ = 4211340000.

The previous prime is 12650869843. The next prime is 12650869871. The reversal of 12650869866 is 66896805621.

It is a happy number.

12650869866 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 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 7 ways as a sum of consecutive naturals, for example, 1399275 + ... + 1408286.

It is an arithmetic number, because the mean of its divisors is an integer number (1583464968).

Almost surely, 2^12650869866 is an apocalyptic number.

12650869866 is an abundant number, since it is smaller than the sum of its proper divisors (12684569622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12650869866 is a wasteful number, since it uses less digits than its factorization.

12650869866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808317.

The product of its (nonzero) digits is 7464960, while the sum is 57.

The spelling of 12650869866 in words is "twelve billion, six hundred fifty million, eight hundred sixty-nine thousand, eight hundred sixty-six".