12655566219 has 16 divisors (see below), whose sum is σ = 16985309184. Its totient is φ = 8381553600.

The previous prime is 12655566167. The next prime is 12655566251. The reversal of 12655566219 is 91266555621.

It is not a de Polignac number, because 12655566219 - 2⁸ = 12655565963 is a prime.

It is a super-2 number, since 2×12655566219² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12655566269) 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, 421542 + ... + 450564.

It is an arithmetic number, because the mean of its divisors is an integer number (1061581824).

Almost surely, 2^12655566219 is an apocalyptic number.

12655566219 is a deficient number, since it is larger than the sum of its proper divisors (4329742965).

12655566219 is a wasteful number, since it uses less digits than its factorization.

12655566219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29978.

The product of its digits is 972000, while the sum is 48.

The spelling of 12655566219 in words is "twelve billion, six hundred fifty-five million, five hundred sixty-six thousand, two hundred nineteen".