12646262329 has 2 divisors, whose sum is σ = 12646262330. Its totient is φ = 12646262328.

The previous prime is 12646262303. The next prime is 12646262333. The reversal of 12646262329 is 92326264621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12561253929 + 85008400 = 112077^2 + 9220^2 .

It is an emirp because it is prime and its reverse (92326264621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12646262329 - 2¹⁷ = 12646131257 is a prime.

It is not a weakly prime, because it can be changed into another prime (12646262399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6323131164 + 6323131165.

It is an arithmetic number, because the mean of its divisors is an integer number (6323131165).

Almost surely, 2^12646262329 is an apocalyptic number.

It is an amenable number.

12646262329 is a deficient number, since it is larger than the sum of its proper divisors (1).

12646262329 is an equidigital number, since it uses as much as digits as its factorization.

12646262329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 43.

The spelling of 12646262329 in words is "twelve billion, six hundred forty-six million, two hundred sixty-two thousand, three hundred twenty-nine".