12371889533 has 2 divisors, whose sum is σ = 12371889534. Its totient is φ = 12371889532.

The previous prime is 12371889529. The next prime is 12371889617. The reversal of 12371889533 is 33598817321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9837069124 + 2534820409 = 99182^2 + 50347^2 .

It is an emirp because it is prime and its reverse (33598817321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12371889533 - 2² = 12371889529 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12371889133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6185944766 + 6185944767.

It is an arithmetic number, because the mean of its divisors is an integer number (6185944767).

Almost surely, 2^12371889533 is an apocalyptic number.

It is an amenable number.

12371889533 is a deficient number, since it is larger than the sum of its proper divisors (1).

12371889533 is an equidigital number, since it uses as much as digits as its factorization.

12371889533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 50.

The spelling of 12371889533 in words is "twelve billion, three hundred seventy-one million, eight hundred eighty-nine thousand, five hundred thirty-three".