666342424243711 has 2 divisors, whose sum is σ = 666342424243712. Its totient is φ = 666342424243710.

The previous prime is 666342424243649. The next prime is 666342424243751. The reversal of 666342424243711 is 117342424243666.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666342424243711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666342424243751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333171212121855 + 333171212121856.

It is an arithmetic number, because the mean of its divisors is an integer number (333171212121856).

Almost surely, 2^{666342424243711} is an apocalyptic number.

666342424243711 is a deficient number, since it is larger than the sum of its proper divisors (1).

666342424243711 is an equidigital number, since it uses as much as digits as its factorization.

666342424243711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27869184, while the sum is 55.

The spelling of 666342424243711 in words is "six hundred sixty-six trillion, three hundred forty-two billion, four hundred twenty-four million, two hundred forty-three thousand, seven hundred eleven".