12115133715 has 32 divisors (see below), whose sum is σ = 20089423872. Its totient is φ = 6228000000.

The previous prime is 12115133707. The next prime is 12115133753. The reversal of 12115133715 is 51733151121.

It is not a de Polignac number, because 12115133715 - 2³ = 12115133707 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64815 + ... + 168615.

It is an arithmetic number, because the mean of its divisors is an integer number (627794496).

Almost surely, 2^12115133715 is an apocalyptic number.

12115133715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12115133715 is a deficient number, since it is larger than the sum of its proper divisors (7974290157).

12115133715 is a wasteful number, since it uses less digits than its factorization.

12115133715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104091.

The product of its digits is 3150, while the sum is 30.

Adding to 12115133715 its reverse (51733151121), we get a palindrome (63848284836).

The spelling of 12115133715 in words is "twelve billion, one hundred fifteen million, one hundred thirty-three thousand, seven hundred fifteen".