12665163212 has 24 divisors (see below), whose sum is σ = 24638931072. Its totient is φ = 5656896000.

The previous prime is 12665163211. The next prime is 12665163227. The reversal of 12665163212 is 21236156621.

It is not an unprimeable number, because it can be changed into a prime (12665163211) 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, 3926789 + ... + 3930012.

It is an arithmetic number, because the mean of its divisors is an integer number (1026622128).

Almost surely, 2^12665163212 is an apocalyptic number.

It is an amenable number.

12665163212 is a deficient number, since it is larger than the sum of its proper divisors (11973767860).

12665163212 is a wasteful number, since it uses less digits than its factorization.

12665163212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7856849 (or 7856847 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The spelling of 12665163212 in words is "twelve billion, six hundred sixty-five million, one hundred sixty-three thousand, two hundred twelve".