12668886877 has 2 divisors, whose sum is σ = 12668886878. Its totient is φ = 12668886876.

The previous prime is 12668886871. The next prime is 12668886889. The reversal of 12668886877 is 77868886621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11284600441 + 1384286436 = 106229^2 + 37206^2 .

It is a cyclic number.

It is not a de Polignac number, because 12668886877 - 2¹⁹ = 12668362589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12668886871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6334443438 + 6334443439.

It is an arithmetic number, because the mean of its divisors is an integer number (6334443439).

Almost surely, 2^12668886877 is an apocalyptic number.

It is an amenable number.

12668886877 is a deficient number, since it is larger than the sum of its proper divisors (1).

12668886877 is an equidigital number, since it uses as much as digits as its factorization.

12668886877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86704128, while the sum is 67.

The spelling of 12668886877 in words is "twelve billion, six hundred sixty-eight million, eight hundred eighty-six thousand, eight hundred seventy-seven".