12321427717 has 2 divisors, whose sum is σ = 12321427718. Its totient is φ = 12321427716.

The previous prime is 12321427711. The next prime is 12321427721. The reversal of 12321427717 is 71772412321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12312343521 + 9084196 = 110961^2 + 3014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12321427717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12321427711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160713858 + 6160713859.

It is an arithmetic number, because the mean of its divisors is an integer number (6160713859).

Almost surely, 2^12321427717 is an apocalyptic number.

It is an amenable number.

12321427717 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321427717 is an equidigital number, since it uses as much as digits as its factorization.

12321427717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32928, while the sum is 37.

The spelling of 12321427717 in words is "twelve billion, three hundred twenty-one million, four hundred twenty-seven thousand, seven hundred seventeen".