12239555533 has 2 divisors, whose sum is σ = 12239555534. Its totient is φ = 12239555532.

The previous prime is 12239555459. The next prime is 12239555719. The reversal of 12239555533 is 33555593221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8314157124 + 3925398409 = 91182^2 + 62653^2 .

It is a cyclic number.

It is not a de Polignac number, because 12239555533 - 2³³ = 3649620941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12239555533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12239535533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6119777766 + 6119777767.

It is an arithmetic number, because the mean of its divisors is an integer number (6119777767).

Almost surely, 2^12239555533 is an apocalyptic number.

It is an amenable number.

12239555533 is a deficient number, since it is larger than the sum of its proper divisors (1).

12239555533 is an equidigital number, since it uses as much as digits as its factorization.

12239555533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 607500, while the sum is 43.

The spelling of 12239555533 in words is "twelve billion, two hundred thirty-nine million, five hundred fifty-five thousand, five hundred thirty-three".