12442624393 has 2 divisors, whose sum is σ = 12442624394. Its totient is φ = 12442624392.

The previous prime is 12442624379. The next prime is 12442624421. The reversal of 12442624393 is 39342624421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10702316304 + 1740308089 = 103452^2 + 41717^2 .

It is an emirp because it is prime and its reverse (39342624421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12442624393 - 2³³ = 3852689801 is a prime.

It is not a weakly prime, because it can be changed into another prime (12442624303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221312196 + 6221312197.

It is an arithmetic number, because the mean of its divisors is an integer number (6221312197).

Almost surely, 2^12442624393 is an apocalyptic number.

It is an amenable number.

12442624393 is a deficient number, since it is larger than the sum of its proper divisors (1).

12442624393 is an equidigital number, since it uses as much as digits as its factorization.

12442624393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 40.

The spelling of 12442624393 in words is "twelve billion, four hundred forty-two million, six hundred twenty-four thousand, three hundred ninety-three".