12642565227 has 8 divisors (see below), whose sum is σ = 17589656064. Its totient is φ = 8061925608.

The previous prime is 12642565223. The next prime is 12642565237. The reversal of 12642565227 is 72256524621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12642565227 - 2² = 12642565223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12642565223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 91612723 + ... + 91612860.

It is an arithmetic number, because the mean of its divisors is an integer number (2198707008).

Almost surely, 2^12642565227 is an apocalyptic number.

12642565227 is a deficient number, since it is larger than the sum of its proper divisors (4947090837).

12642565227 is a wasteful number, since it uses less digits than its factorization.

12642565227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183225609.

The product of its digits is 403200, while the sum is 42.

The spelling of 12642565227 in words is "twelve billion, six hundred forty-two million, five hundred sixty-five thousand, two hundred twenty-seven".