12535444405433 has 4 divisors (see below), whose sum is σ = 12555761171700. Its totient is φ = 12515127639168.

The previous prime is 12535444405411. The next prime is 12535444405447. The reversal of 12535444405433 is 33450444453521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6244136375929 + 6291308029504 = 2498827^2 + 2508248^2 .

It is a cyclic number.

It is not a de Polignac number, because 12535444405433 - 2³⁸ = 12260566498489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12535444405633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10158382208 + ... + 10158383441.

It is an arithmetic number, because the mean of its divisors is an integer number (3138940292925).

Almost surely, 2^{12535444405433} is an apocalyptic number.

It is an amenable number.

12535444405433 is a deficient number, since it is larger than the sum of its proper divisors (20316766267).

12535444405433 is an equidigital number, since it uses as much as digits as its factorization.

12535444405433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20316766266.

The product of its (nonzero) digits is 6912000, while the sum is 47.

Adding to 12535444405433 its reverse (33450444453521), we get a palindrome (45985888858954).

The spelling of 12535444405433 in words is "twelve trillion, five hundred thirty-five billion, four hundred forty-four million, four hundred five thousand, four hundred thirty-three".