12806144966 has 4 divisors (see below), whose sum is σ = 19209217452. Its totient is φ = 6403072482.

The previous prime is 12806144933. The next prime is 12806144987. The reversal of 12806144966 is 66944160821.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12806144966.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3201536240 + ... + 3201536243.

It is an arithmetic number, because the mean of its divisors is an integer number (4802304363).

Almost surely, 2^12806144966 is an apocalyptic number.

12806144966 is a deficient number, since it is larger than the sum of its proper divisors (6403072486).

12806144966 is an equidigital number, since it uses as much as digits as its factorization.

12806144966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6403072485.

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 12806144966 in words is "twelve billion, eight hundred six million, one hundred forty-four thousand, nine hundred sixty-six".