66693810422 has 8 divisors (see below), whose sum is σ = 100043268696. Its totient is φ = 33346054192.

The previous prime is 66693810377. The next prime is 66693810427. The reversal of 66693810422 is 22401839666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66693810427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322568 + ... + 487275.

It is an arithmetic number, because the mean of its divisors is an integer number (12505408587).

Almost surely, 2^66693810422 is an apocalyptic number.

66693810422 is a deficient number, since it is larger than the sum of its proper divisors (33349458274).

66693810422 is a wasteful number, since it uses less digits than its factorization.

66693810422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851022.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 66693810422 in words is "sixty-six billion, six hundred ninety-three million, eight hundred ten thousand, four hundred twenty-two".