8561499268 has 24 divisors (see below), whose sum is σ = 18130234752. Its totient is φ = 3453377664.

The previous prime is 8561499259. The next prime is 8561499293. The reversal of 8561499268 is 8629941658.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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, 8992696 + ... + 8993647.

It is an arithmetic number, because the mean of its divisors is an integer number (755426448).

Almost surely, 2^8561499268 is an apocalyptic number.

It is an amenable number.

8561499268 is an abundant number, since it is smaller than the sum of its proper divisors (9568735484).

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

8561499268 is a wasteful number, since it uses less digits than its factorization.

8561499268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17986371 (or 17986369 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 58.

The square root of 8561499268 is about 92528.3700710220. The cubic root of 8561499268 is about 2045.7376653047.

The spelling of 8561499268 in words is "eight billion, five hundred sixty-one million, four hundred ninety-nine thousand, two hundred sixty-eight".