12668548729 has 2 divisors, whose sum is σ = 12668548730. Its totient is φ = 12668548728.

The previous prime is 12668548727. The next prime is 12668548771. The reversal of 12668548729 is 92784586621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7700413504 + 4968135225 = 87752^2 + 70485^2 .

It is an emirp because it is prime and its reverse (92784586621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12668548729 - 2¹ = 12668548727 is a prime.

Together with 12668548727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12668548727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6334274364 + 6334274365.

It is an arithmetic number, because the mean of its divisors is an integer number (6334274365).

Almost surely, 2^12668548729 is an apocalyptic number.

It is an amenable number.

12668548729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12668548729 is an equidigital number, since it uses as much as digits as its factorization.

12668548729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11612160, while the sum is 58.

The spelling of 12668548729 in words is "twelve billion, six hundred sixty-eight million, five hundred forty-eight thousand, seven hundred twenty-nine".