12535044437 has 2 divisors, whose sum is σ = 12535044438. Its totient is φ = 12535044436.

The previous prime is 12535044407. The next prime is 12535044443. The reversal of 12535044437 is 73444053521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9129038116 + 3406006321 = 95546^2 + 58361^2 .

It is an emirp because it is prime and its reverse (73444053521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12535044437 - 2²⁴ = 12518267221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12535044437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12535044407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6267522218 + 6267522219.

It is an arithmetic number, because the mean of its divisors is an integer number (6267522219).

Almost surely, 2^12535044437 is an apocalyptic number.

It is an amenable number.

12535044437 is a deficient number, since it is larger than the sum of its proper divisors (1).

12535044437 is an equidigital number, since it uses as much as digits as its factorization.

12535044437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 38.

Adding to 12535044437 its reverse (73444053521), we get a palindrome (85979097958).

The spelling of 12535044437 in words is "twelve billion, five hundred thirty-five million, forty-four thousand, four hundred thirty-seven".