66873554333 has 2 divisors, whose sum is σ = 66873554334. Its totient is φ = 66873554332.

The previous prime is 66873554303. The next prime is 66873554353. The reversal of 66873554333 is 33345537866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66761257924 + 112296409 = 258382^2 + 10597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66873554333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66873554303) 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, 33436777166 + 33436777167.

It is an arithmetic number, because the mean of its divisors is an integer number (33436777167).

Almost surely, 2^66873554333 is an apocalyptic number.

It is an amenable number.

66873554333 is a deficient number, since it is larger than the sum of its proper divisors (1).

66873554333 is an equidigital number, since it uses as much as digits as its factorization.

66873554333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16329600, while the sum is 53.

The spelling of 66873554333 in words is "sixty-six billion, eight hundred seventy-three million, five hundred fifty-four thousand, three hundred thirty-three".