12666366343 has 2 divisors, whose sum is σ = 12666366344. Its totient is φ = 12666366342.

The previous prime is 12666366319. The next prime is 12666366403. The reversal of 12666366343 is 34366366621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12666366343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12666366293 and 12666366302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12666336343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6333183171 + 6333183172.

It is an arithmetic number, because the mean of its divisors is an integer number (6333183172).

Almost surely, 2^12666366343 is an apocalyptic number.

12666366343 is a deficient number, since it is larger than the sum of its proper divisors (1).

12666366343 is an equidigital number, since it uses as much as digits as its factorization.

12666366343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 46.

The spelling of 12666366343 in words is "twelve billion, six hundred sixty-six million, three hundred sixty-six thousand, three hundred forty-three".