12686000077 has 2 divisors, whose sum is σ = 12686000078. Its totient is φ = 12686000076.

The previous prime is 12686000057. The next prime is 12686000081. The reversal of 12686000077 is 77000068621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11825692516 + 860307561 = 108746^2 + 29331^2 .

It is a cyclic number.

It is not a de Polignac number, because 12686000077 - 2¹¹ = 12685998029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12686000057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6343000038 + 6343000039.

It is an arithmetic number, because the mean of its divisors is an integer number (6343000039).

Almost surely, 2^12686000077 is an apocalyptic number.

It is an amenable number.

12686000077 is a deficient number, since it is larger than the sum of its proper divisors (1).

12686000077 is an equidigital number, since it uses as much as digits as its factorization.

12686000077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

Adding to 12686000077 its reverse (77000068621), we get a palindrome (89686068698).

The spelling of 12686000077 in words is "twelve billion, six hundred eighty-six million, seventy-seven", and thus it is an aban number.