12645326166 has 16 divisors (see below), whose sum is σ = 27589802688. Its totient is φ = 3831917000.

The previous prime is 12645326131. The next prime is 12645326167. The reversal of 12645326166 is 66162354621.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12645326167) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 95797860 + ... + 95797991.

It is an arithmetic number, because the mean of its divisors is an integer number (1724362668).

Almost surely, 2^12645326166 is an apocalyptic number.

12645326166 is an abundant number, since it is smaller than the sum of its proper divisors (14944476522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12645326166 is a wasteful number, since it uses less digits than its factorization.

12645326166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191595867.

The product of its digits is 311040, while the sum is 42.

The spelling of 12645326166 in words is "twelve billion, six hundred forty-five million, three hundred twenty-six thousand, one hundred sixty-six".