12166632013 has 2 divisors, whose sum is σ = 12166632014. Its totient is φ = 12166632012.

The previous prime is 12166631999. The next prime is 12166632113. The reversal of 12166632013 is 31023666121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9622236649 + 2544395364 = 98093^2 + 50442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12166632013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12166632113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6083316006 + 6083316007.

It is an arithmetic number, because the mean of its divisors is an integer number (6083316007).

Almost surely, 2^12166632013 is an apocalyptic number.

It is an amenable number.

12166632013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12166632013 is an equidigital number, since it uses as much as digits as its factorization.

12166632013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 12166632013 in words is "twelve billion, one hundred sixty-six million, six hundred thirty-two thousand, thirteen".