12666655027 has 8 divisors (see below), whose sum is σ = 13646412864. Its totient is φ = 11687668608.

The previous prime is 12666655021. The next prime is 12666655033. The reversal of 12666655027 is 72055666621.

It is an interprime number because it is at equal distance from previous prime (12666655021) and next prime (12666655033).

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

It is a cyclic number.

It is not a de Polignac number, because 12666655027 - 2³ = 12666655019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12666655021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158518 + ... + 224635.

It is an arithmetic number, because the mean of its divisors is an integer number (1705801608).

Almost surely, 2^12666655027 is an apocalyptic number.

12666655027 is a deficient number, since it is larger than the sum of its proper divisors (979757837).

12666655027 is a wasteful number, since it uses less digits than its factorization.

12666655027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385709.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 12666655027 in words is "twelve billion, six hundred sixty-six million, six hundred fifty-five thousand, twenty-seven".