8165216808 has 96 divisors (see below), whose sum is σ = 25294800960. Its totient is φ = 2330933760.

The previous prime is 8165216767. The next prime is 8165216819. The reversal of 8165216808 is 8086125618.

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 23 ways as a sum of consecutive naturals, for example, 647443 + ... + 659933.

It is an arithmetic number, because the mean of its divisors is an integer number (263487510).

Almost surely, 2^8165216808 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 8165216808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12647400480).

8165216808 is an abundant number, since it is smaller than the sum of its proper divisors (17129584152).

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

8165216808 is a wasteful number, since it uses less digits than its factorization.

8165216808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13807 (or 13800 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 8165216808 is about 90361.5892290524. The cubic root of 8165216808 is about 2013.6743601914.

The spelling of 8165216808 in words is "eight billion, one hundred sixty-five million, two hundred sixteen thousand, eight hundred eight".