666454646383 has 2 divisors, whose sum is σ = 666454646384. Its totient is φ = 666454646382.

The previous prime is 666454646339. The next prime is 666454646401. The reversal of 666454646383 is 383646454666.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666454646383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666454646323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333227323191 + 333227323192.

It is an arithmetic number, because the mean of its divisors is an integer number (333227323192).

Almost surely, 2^666454646383 is an apocalyptic number.

666454646383 is a deficient number, since it is larger than the sum of its proper divisors (1).

666454646383 is an equidigital number, since it uses as much as digits as its factorization.

666454646383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 179159040, while the sum is 61.

The spelling of 666454646383 in words is "six hundred sixty-six billion, four hundred fifty-four million, six hundred forty-six thousand, three hundred eighty-three".