12186606665 has 8 divisors (see below), whose sum is σ = 14662515840. Its totient is φ = 9723560112.

The previous prime is 12186606661. The next prime is 12186606697. The reversal of 12186606665 is 56660668121.

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 12186606665 - 2² = 12186606661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12186606661) 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, 3213569 + ... + 3217358.

It is an arithmetic number, because the mean of its divisors is an integer number (1832814480).

Almost surely, 2^12186606665 is an apocalyptic number.

It is an amenable number.

12186606665 is a deficient number, since it is larger than the sum of its proper divisors (2475909175).

12186606665 is an equidigital number, since it uses as much as digits as its factorization.

12186606665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6431311.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 12186606665 in words is "twelve billion, one hundred eighty-six million, six hundred six thousand, six hundred sixty-five".