66695628222 has 24 divisors (see below), whose sum is σ = 144732659760. Its totient is φ = 22197189120.

The previous prime is 66695628169. The next prime is 66695628257. The reversal of 66695628222 is 22282659666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2878722 + ... + 2901797.

It is an arithmetic number, because the mean of its divisors is an integer number (6030527490).

Almost surely, 2^66695628222 is an apocalyptic number.

66695628222 is an abundant number, since it is smaller than the sum of its proper divisors (78037031538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66695628222 is a wasteful number, since it uses less digits than its factorization.

66695628222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5781168 (or 5781165 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 66695628222 in words is "sixty-six billion, six hundred ninety-five million, six hundred twenty-eight thousand, two hundred twenty-two".