12666417674 has 16 divisors (see below), whose sum is σ = 19032710400. Its totient is φ = 6322192944.

The previous prime is 12666417671. The next prime is 12666417677. The reversal of 12666417674 is 47671466621.

It is a happy number.

12666417674 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12666417671) and next prime (12666417677).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12666417671) 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 in 7 ways as a sum of consecutive naturals, for example, 3921092 + ... + 3924320.

It is an arithmetic number, because the mean of its divisors is an integer number (1189544400).

Almost surely, 2^12666417674 is an apocalyptic number.

12666417674 is a deficient number, since it is larger than the sum of its proper divisors (6366292726).

12666417674 is a wasteful number, since it uses less digits than its factorization.

12666417674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037.

The product of its digits is 2032128, while the sum is 50.

The spelling of 12666417674 in words is "twelve billion, six hundred sixty-six million, four hundred seventeen thousand, six hundred seventy-four".