12115306533 has 8 divisors (see below), whose sum is σ = 17622264096. Its totient is φ = 7342610000.

The previous prime is 12115306531. The next prime is 12115306549. The reversal of 12115306533 is 33560351121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12115306533 - 2¹ = 12115306531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12115306533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12115306531) 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 7 ways as a sum of consecutive naturals, for example, 183565218 + ... + 183565283.

It is an arithmetic number, because the mean of its divisors is an integer number (2202783012).

Almost surely, 2^12115306533 is an apocalyptic number.

It is an amenable number.

12115306533 is a deficient number, since it is larger than the sum of its proper divisors (5506957563).

12115306533 is a wasteful number, since it uses less digits than its factorization.

12115306533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367130515.

The product of its (nonzero) digits is 8100, while the sum is 30.

Adding to 12115306533 its reverse (33560351121), we get a palindrome (45675657654).

The spelling of 12115306533 in words is "twelve billion, one hundred fifteen million, three hundred six thousand, five hundred thirty-three".