12585623866 has 16 divisors (see below), whose sum is σ = 18920672064. Its totient is φ = 6278747904.

The previous prime is 12585623819. The next prime is 12585623891. The reversal of 12585623866 is 66832658521.

12585623866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2731921 + ... + 2736523.

It is an arithmetic number, because the mean of its divisors is an integer number (1182542004).

Almost surely, 2^12585623866 is an apocalyptic number.

12585623866 is a deficient number, since it is larger than the sum of its proper divisors (6335048198).

12585623866 is a wasteful number, since it uses less digits than its factorization.

12585623866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7365.

The product of its digits is 4147200, while the sum is 52.

The spelling of 12585623866 in words is "twelve billion, five hundred eighty-five million, six hundred twenty-three thousand, eight hundred sixty-six".