66766067212 has 24 divisors (see below), whose sum is σ = 127891123472. Its totient is φ = 30309940800.

The previous prime is 66766067209. The next prime is 66766067219. The reversal of 66766067212 is 21276066766.

It is not an unprimeable number, because it can be changed into a prime (66766067219) 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 7 ways as a sum of consecutive naturals, for example, 10521114 + ... + 10527457.

Almost surely, 2^66766067212 is an apocalyptic number.

It is an amenable number.

66766067212 is a deficient number, since it is larger than the sum of its proper divisors (61125056260).

66766067212 is a wasteful number, since it uses less digits than its factorization.

66766067212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21048649 (or 21048647 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 49.

The spelling of 66766067212 in words is "sixty-six billion, seven hundred sixty-six million, sixty-seven thousand, two hundred twelve".