66228079228 has 24 divisors (see below), whose sum is σ = 116433729104. Its totient is φ = 32961427200.

The previous prime is 66228079217. The next prime is 66228079249. The reversal of 66228079228 is 82297082266.

66228079228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2242051 + ... + 2271397.

Almost surely, 2^66228079228 is an apocalyptic number.

It is an amenable number.

66228079228 is a deficient number, since it is larger than the sum of its proper divisors (50205649876).

66228079228 is a wasteful number, since it uses less digits than its factorization.

66228079228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31933 (or 31931 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 66228079228 in words is "sixty-six billion, two hundred twenty-eight million, seventy-nine thousand, two hundred twenty-eight".