9115755912 has 144 divisors (see below), whose sum is σ = 26330063760. Its totient is φ = 2848531968.

The previous prime is 9115755911. The next prime is 9115755941. The reversal of 9115755912 is 2195575119.

It is a happy number.

9115755912 is a `hidden beast` number, since 9 + 1 + 1 + 57 + 5 + 591 + 2 = 666.

9115755912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (9115755911) 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 35 ways as a sum of consecutive naturals, for example, 6387343 + ... + 6388769.

It is an arithmetic number, because the mean of its divisors is an integer number (182847665).

Almost surely, 2^9115755912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9115755912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13165031880).

9115755912 is an abundant number, since it is smaller than the sum of its proper divisors (17214307848).

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

9115755912 is a wasteful number, since it uses less digits than its factorization.

9115755912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780 (or 1756 counting only the distinct ones).

The product of its digits is 141750, while the sum is 45.

The square root of 9115755912 is about 95476.4678441761. The cubic root of 9115755912 is about 2088.9637126602.

The spelling of 9115755912 in words is "nine billion, one hundred fifteen million, seven hundred fifty-five thousand, nine hundred twelve".