8991513632 has 24 divisors (see below), whose sum is σ = 17966256336. Its totient is φ = 4428654912.

The previous prime is 8991513631. The next prime is 8991513677. The reversal of 8991513632 is 2363151998.

8991513632 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 (8991513631) 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 3 ways as a sum of consecutive naturals, for example, 2094758 + ... + 2099045.

It is an arithmetic number, because the mean of its divisors is an integer number (748594014).

Almost surely, 2^8991513632 is an apocalyptic number.

It is an amenable number.

8991513632 is a deficient number, since it is larger than the sum of its proper divisors (8974742704).

8991513632 is a wasteful number, since it uses less digits than its factorization.

8991513632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4193880 (or 4193872 counting only the distinct ones).

The product of its digits is 349920, while the sum is 47.

The square root of 8991513632 is about 94823.5921698814. The cubic root of 8991513632 is about 2079.4298264588.

The spelling of 8991513632 in words is "eight billion, nine hundred ninety-one million, five hundred thirteen thousand, six hundred thirty-two".