12115435240 has 32 divisors (see below), whose sum is σ = 27721764000. Its totient is φ = 4764034624.

The previous prime is 12115435231. The next prime is 12115435247. The reversal of 12115435240 is 4253451121.

12115435240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12115435199 and 12115435208.

It is not an unprimeable number, because it can be changed into a prime (12115435247) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2564470 + ... + 2569189.

It is an arithmetic number, because the mean of its divisors is an integer number (866305125).

Almost surely, 2^12115435240 is an apocalyptic number.

12115435240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12115435240 is an abundant number, since it is smaller than the sum of its proper divisors (15606328760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12115435240 is a wasteful number, since it uses less digits than its factorization.

12115435240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5133729 (or 5133725 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 12115435240 its reverse (4253451121), we get a palindrome (16368886361).

The spelling of 12115435240 in words is "twelve billion, one hundred fifteen million, four hundred thirty-five thousand, two hundred forty".