12318763393 has 2 divisors, whose sum is σ = 12318763394. Its totient is φ = 12318763392.

The previous prime is 12318763381. The next prime is 12318763409. The reversal of 12318763393 is 39336781321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7866270864 + 4452492529 = 88692^2 + 66727^2 .

It is a cyclic number.

It is not a de Polignac number, because 12318763393 - 2⁹ = 12318762881 is a prime.

It is not a weakly prime, because it can be changed into another prime (12318763343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159381696 + 6159381697.

It is an arithmetic number, because the mean of its divisors is an integer number (6159381697).

Almost surely, 2^12318763393 is an apocalyptic number.

It is an amenable number.

12318763393 is a deficient number, since it is larger than the sum of its proper divisors (1).

12318763393 is an equidigital number, since it uses as much as digits as its factorization.

12318763393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 46.

The spelling of 12318763393 in words is "twelve billion, three hundred eighteen million, seven hundred sixty-three thousand, three hundred ninety-three".