12766193893 has 2 divisors, whose sum is σ = 12766193894. Its totient is φ = 12766193892.

The previous prime is 12766193873. The next prime is 12766193927. The reversal of 12766193893 is 39839166721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9500985729 + 3265208164 = 97473^2 + 57142^2 .

It is a cyclic number.

It is not a de Polignac number, because 12766193893 - 2¹⁷ = 12766062821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12766193813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6383096946 + 6383096947.

It is an arithmetic number, because the mean of its divisors is an integer number (6383096947).

Almost surely, 2^12766193893 is an apocalyptic number.

It is an amenable number.

12766193893 is a deficient number, since it is larger than the sum of its proper divisors (1).

12766193893 is an equidigital number, since it uses as much as digits as its factorization.

12766193893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 55.

The spelling of 12766193893 in words is "twelve billion, seven hundred sixty-six million, one hundred ninety-three thousand, eight hundred ninety-three".