12321666008 has 16 divisors (see below), whose sum is σ = 23104372560. Its totient is φ = 6160500000.

The previous prime is 12321666001. The next prime is 12321666047. The reversal of 12321666008 is 80066612321.

It is a Cunningham number, because it is equal to 111003²-1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321666001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194258 + ... + 249758.

It is an arithmetic number, because the mean of its divisors is an integer number (1444023285).

Almost surely, 2^12321666008 is an apocalyptic number.

It is an amenable number.

12321666008 is a deficient number, since it is larger than the sum of its proper divisors (10782706552).

12321666008 is a wasteful number, since it uses less digits than its factorization.

12321666008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83258 (or 83254 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 12321666008 in words is "twelve billion, three hundred twenty-one million, six hundred sixty-six thousand, eight".