12655566227 has 16 divisors (see below), whose sum is σ = 13663725600. Its totient is φ = 11682351360.

The previous prime is 12655566167. The next prime is 12655566251. The reversal of 12655566227 is 72266555621.

It is a cyclic number.

It is not a de Polignac number, because 12655566227 - 2⁶ = 12655566163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12655526227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635993 + ... + 655589.

It is an arithmetic number, because the mean of its divisors is an integer number (853982850).

Almost surely, 2^12655566227 is an apocalyptic number.

12655566227 is a deficient number, since it is larger than the sum of its proper divisors (1008159373).

12655566227 is a wasteful number, since it uses less digits than its factorization.

12655566227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20486.

The product of its digits is 1512000, while the sum is 47.

The spelling of 12655566227 in words is "twelve billion, six hundred fifty-five million, five hundred sixty-six thousand, two hundred twenty-seven".