12001666340267 has 2 divisors, whose sum is σ = 12001666340268. Its totient is φ = 12001666340266.

The previous prime is 12001666340249. The next prime is 12001666340281. The reversal of 12001666340267 is 76204366610021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12001666340267 - 2³⁶ = 11932946863531 is a prime.

It is not a weakly prime, because it can be changed into another prime (12001666340467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000833170133 + 6000833170134.

It is an arithmetic number, because the mean of its divisors is an integer number (6000833170134).

Almost surely, 2^{12001666340267} is an apocalyptic number.

12001666340267 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001666340267 is an equidigital number, since it uses as much as digits as its factorization.

12001666340267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 12001666340267 in words is "twelve trillion, one billion, six hundred sixty-six million, three hundred forty thousand, two hundred sixty-seven".