12657606866 has 8 divisors (see below), whose sum is σ = 18987124464. Its totient is φ = 6328565380.

The previous prime is 12657606833. The next prime is 12657606877. The reversal of 12657606866 is 66860675621.

12657606866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 42800 + ... + 164763.

It is an arithmetic number, because the mean of its divisors is an integer number (2373390558).

Almost surely, 2^12657606866 is an apocalyptic number.

12657606866 is a deficient number, since it is larger than the sum of its proper divisors (6329517598).

12657606866 is a wasteful number, since it uses less digits than its factorization.

12657606866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238056.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 12657606866 in words is "twelve billion, six hundred fifty-seven million, six hundred six thousand, eight hundred sixty-six".