33223138866 has 12 divisors (see below), whose sum is σ = 71983467582. Its totient is φ = 11074379616.

The previous prime is 33223138847. The next prime is 33223138889. The reversal of 33223138866 is 66883132233.

33223138866 is a `hidden beast` number, since 3 + 32 + 231 + 388 + 6 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23157230625 + 10065908241 = 152175^2 + 100329^2 .

It is a super-2 number, since 2×33223138866² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 922864951 + ... + 922864986.

Almost surely, 2^33223138866 is an apocalyptic number.

33223138866 is an abundant number, since it is smaller than the sum of its proper divisors (38760328716).

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

33223138866 is a wasteful number, since it uses less digits than its factorization.

33223138866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845729945 (or 1845729942 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The spelling of 33223138866 in words is "thirty-three billion, two hundred twenty-three million, one hundred thirty-eight thousand, eight hundred sixty-six".