12115332775 has 96 divisors (see below), whose sum is σ = 19031226368. Its totient is φ = 7446297600.

The previous prime is 12115332737. The next prime is 12115332781. The reversal of 12115332775 is 57723351121.

It is not a de Polignac number, because 12115332775 - 2⁹ = 12115332263 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 26510347 + ... + 26510803.

Almost surely, 2^12115332775 is an apocalyptic number.

12115332775 is a deficient number, since it is larger than the sum of its proper divisors (6915893593).

12115332775 is a wasteful number, since it uses less digits than its factorization.

12115332775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 796 counting only the distinct ones).

The product of its digits is 44100, while the sum is 37.

Adding to 12115332775 its reverse (57723351121), we get a palindrome (69838683896).

The spelling of 12115332775 in words is "twelve billion, one hundred fifteen million, three hundred thirty-two thousand, seven hundred seventy-five".