66663300766333 has 2 divisors, whose sum is σ = 66663300766334. Its totient is φ = 66663300766332.

The previous prime is 66663300766303. The next prime is 66663300766343. The reversal of 66663300766333 is 33366700336666.

It is a happy number.

66663300766333 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57800545512889 + 8862755253444 = 7602667^2 + 2977038^2 .

It is a cyclic number.

It is not a de Polignac number, because 66663300766333 - 2²⁵ = 66663267211901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66663300766303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33331650383166 + 33331650383167.

It is an arithmetic number, because the mean of its divisors is an integer number (33331650383167).

Almost surely, 2^{66663300766333} is an apocalyptic number.

It is an amenable number.

66663300766333 is a deficient number, since it is larger than the sum of its proper divisors (1).

66663300766333 is an equidigital number, since it uses as much as digits as its factorization.

66663300766333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79361856, while the sum is 58.

The spelling of 66663300766333 in words is "sixty-six trillion, six hundred sixty-three billion, three hundred million, seven hundred sixty-six thousand, three hundred thirty-three".