12466642066 has 4 divisors (see below), whose sum is σ = 18699963102. Its totient is φ = 6233321032.

The previous prime is 12466642063. The next prime is 12466642093. The reversal of 12466642066 is 66024666421.

12466642066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 6364688841 + 6101953225 = 79779^2 + 78115^2 .

It is not an unprimeable number, because it can be changed into a prime (12466642063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3116660515 + ... + 3116660518.

Almost surely, 2^12466642066 is an apocalyptic number.

12466642066 is a deficient number, since it is larger than the sum of its proper divisors (6233321036).

12466642066 is an equidigital number, since it uses as much as digits as its factorization.

12466642066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6233321035.

The product of its (nonzero) digits is 497664, while the sum is 43.

The spelling of 12466642066 in words is "twelve billion, four hundred sixty-six million, six hundred forty-two thousand, sixty-six".