12660064213 has 2 divisors, whose sum is σ = 12660064214. Its totient is φ = 12660064212.

The previous prime is 12660064139. The next prime is 12660064223. The reversal of 12660064213 is 31246006621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12583903684 + 76160529 = 112178^2 + 8727^2 .

It is a cyclic number.

It is not a de Polignac number, because 12660064213 - 2⁹ = 12660063701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12660064223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6330032106 + 6330032107.

It is an arithmetic number, because the mean of its divisors is an integer number (6330032107).

Almost surely, 2^12660064213 is an apocalyptic number.

It is an amenable number.

12660064213 is a deficient number, since it is larger than the sum of its proper divisors (1).

12660064213 is an equidigital number, since it uses as much as digits as its factorization.

12660064213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 12660064213 in words is "twelve billion, six hundred sixty million, sixty-four thousand, two hundred thirteen".