66967886333 has 2 divisors, whose sum is σ = 66967886334. Its totient is φ = 66967886332.

The previous prime is 66967886303. The next prime is 66967886341. The reversal of 66967886333 is 33368876966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49151776804 + 17816109529 = 221702^2 + 133477^2 .

It is a cyclic number.

It is not a de Polignac number, because 66967886333 - 2²⁰ = 66966837757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66967886333.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66967886303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33483943166 + 33483943167.

It is an arithmetic number, because the mean of its divisors is an integer number (33483943167).

Almost surely, 2^66967886333 is an apocalyptic number.

It is an amenable number.

66967886333 is a deficient number, since it is larger than the sum of its proper divisors (1).

66967886333 is an equidigital number, since it uses as much as digits as its factorization.

66967886333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141087744, while the sum is 65.

The spelling of 66967886333 in words is "sixty-six billion, nine hundred sixty-seven million, eight hundred eighty-six thousand, three hundred thirty-three".