12666205233 has 12 divisors (see below), whose sum is σ = 19958869008. Its totient is φ = 7676487960.

The previous prime is 12666205231. The next prime is 12666205241. The reversal of 12666205233 is 33250266621.

It is not a de Polignac number, because 12666205233 - 2¹ = 12666205231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12666205231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63970635 + ... + 63970832.

It is an arithmetic number, because the mean of its divisors is an integer number (1663239084).

Almost surely, 2^12666205233 is an apocalyptic number.

It is an amenable number.

12666205233 is a deficient number, since it is larger than the sum of its proper divisors (7292663775).

12666205233 is a wasteful number, since it uses less digits than its factorization.

12666205233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127941484 (or 127941481 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 12666205233 in words is "twelve billion, six hundred sixty-six million, two hundred five thousand, two hundred thirty-three".