66773888333 has 4 divisors (see below), whose sum is σ = 67770513600. Its totient is φ = 65777263068.

The previous prime is 66773888303. The next prime is 66773888341. The reversal of 66773888333 is 33388837766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66773888333 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66773888303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498312533 + ... + 498312666.

It is an arithmetic number, because the mean of its divisors is an integer number (16942628400).

Almost surely, 2^66773888333 is an apocalyptic number.

It is an amenable number.

66773888333 is a deficient number, since it is larger than the sum of its proper divisors (996625267).

66773888333 is an equidigital number, since it uses as much as digits as its factorization.

66773888333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996625266.

The product of its digits is 73156608, while the sum is 62.

The spelling of 66773888333 in words is "sixty-six billion, seven hundred seventy-three million, eight hundred eighty-eight thousand, three hundred thirty-three".