12533312045 has 4 divisors (see below), whose sum is σ = 15039974460. Its totient is φ = 10026649632.

The previous prime is 12533312027. The next prime is 12533312083. The reversal of 12533312045 is 54021333521.

It is a happy number.

12533312045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5370398089 + 7162913956 = 73283^2 + 84634^2 .

It is a cyclic number.

It is not a de Polignac number, because 12533312045 - 2⁸ = 12533311789 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12533311999 and 12533312017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1253331200 + ... + 1253331209.

It is an arithmetic number, because the mean of its divisors is an integer number (3759993615).

Almost surely, 2^12533312045 is an apocalyptic number.

It is an amenable number.

12533312045 is a deficient number, since it is larger than the sum of its proper divisors (2506662415).

12533312045 is an equidigital number, since it uses as much as digits as its factorization.

12533312045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506662414.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 12533312045 its reverse (54021333521), we get a palindrome (66554645566).

The spelling of 12533312045 in words is "twelve billion, five hundred thirty-three million, three hundred twelve thousand, forty-five".