8721169798 has 16 divisors (see below), whose sum is σ = 14731361280. Its totient is φ = 3836291400.

The previous prime is 8721169763. The next prime is 8721169811. The reversal of 8721169798 is 8979611278.

8721169798 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 6393138 + ... + 6394501.

It is an arithmetic number, because the mean of its divisors is an integer number (920710080).

Almost surely, 2^8721169798 is an apocalyptic number.

8721169798 is a deficient number, since it is larger than the sum of its proper divisors (6010191482).

8721169798 is a wasteful number, since it uses less digits than its factorization.

8721169798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12787683.

The product of its digits is 3048192, while the sum is 58.

The square root of 8721169798 is about 93387.2036094882. The cubic root of 8721169798 is about 2058.3769694556.

The spelling of 8721169798 in words is "eight billion, seven hundred twenty-one million, one hundred sixty-nine thousand, seven hundred ninety-eight".