12685866672 has 40 divisors (see below), whose sum is σ = 32887658944. Its totient is φ = 4213675584.

The previous prime is 12685866671. The next prime is 12685866727. The reversal of 12685866672 is 27666858621.

12685866672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12685866671) by changing a digit.

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, 453358 + ... + 480525.

Almost surely, 2^12685866672 is an apocalyptic number.

12685866672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12685866672 is an abundant number, since it is smaller than the sum of its proper divisors (20201792272).

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

12685866672 is a wasteful number, since it uses less digits than its factorization.

12685866672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934177 (or 934171 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 57.

The spelling of 12685866672 in words is "twelve billion, six hundred eighty-five million, eight hundred sixty-six thousand, six hundred seventy-two".