66223422272 has 112 divisors (see below), whose sum is σ = 152327823360. Its totient is φ = 27977743872.

The previous prime is 66223422227. The next prime is 66223422283. The reversal of 66223422272 is 27222432266.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 32099513 + ... + 32101575.

Almost surely, 2^66223422272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66223422272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76163911680).

66223422272 is an abundant number, since it is smaller than the sum of its proper divisors (86104401088).

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

66223422272 is a wasteful number, since it uses less digits than its factorization.

66223422272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068 (or 3058 counting only the distinct ones).

The product of its digits is 193536, while the sum is 38.

The spelling of 66223422272 in words is "sixty-six billion, two hundred twenty-three million, four hundred twenty-two thousand, two hundred seventy-two".