12065456666 has 4 divisors (see below), whose sum is σ = 18098185002. Its totient is φ = 6032728332.

The previous prime is 12065456657. The next prime is 12065456677. The reversal of 12065456666 is 66665456021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11411580625 + 653876041 = 106825^2 + 25571^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12065456666.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3016364165 + ... + 3016364168.

Almost surely, 2^12065456666 is an apocalyptic number.

12065456666 is a deficient number, since it is larger than the sum of its proper divisors (6032728336).

12065456666 is an equidigital number, since it uses as much as digits as its factorization.

12065456666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6032728335.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 12065456666 in words is "twelve billion, sixty-five million, four hundred fifty-six thousand, six hundred sixty-six".