12533171361 has 4 divisors (see below), whose sum is σ = 16710895152. Its totient is φ = 8355447572.

The previous prime is 12533171327. The next prime is 12533171393. The reversal of 12533171361 is 16317133521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12533171361 - 2¹⁰ = 12533170337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12533170361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2088861891 + ... + 2088861896.

It is an arithmetic number, because the mean of its divisors is an integer number (4177723788).

Almost surely, 2^12533171361 is an apocalyptic number.

It is an amenable number.

12533171361 is a deficient number, since it is larger than the sum of its proper divisors (4177723791).

12533171361 is an equidigital number, since it uses as much as digits as its factorization.

12533171361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4177723790.

The product of its digits is 11340, while the sum is 33.

The spelling of 12533171361 in words is "twelve billion, five hundred thirty-three million, one hundred seventy-one thousand, three hundred sixty-one".