12668886889 has 2 divisors, whose sum is σ = 12668886890. Its totient is φ = 12668886888.

The previous prime is 12668886877. The next prime is 12668886929. The reversal of 12668886889 is 98868886621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12153960025 + 514926864 = 110245^2 + 22692^2 .

It is a cyclic number.

It is not a de Polignac number, because 12668886889 - 2¹⁷ = 12668755817 is a prime.

It is not a weakly prime, because it can be changed into another prime (12668881889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6334443444 + 6334443445.

It is an arithmetic number, because the mean of its divisors is an integer number (6334443445).

Almost surely, 2^12668886889 is an apocalyptic number.

It is an amenable number.

12668886889 is a deficient number, since it is larger than the sum of its proper divisors (1).

12668886889 is an equidigital number, since it uses as much as digits as its factorization.

12668886889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127401984, while the sum is 70.

The spelling of 12668886889 in words is "twelve billion, six hundred sixty-eight million, eight hundred eighty-six thousand, eight hundred eighty-nine".