8117562768 has 160 divisors (see below), whose sum is σ = 24267589632. Its totient is φ = 2290329600.

The previous prime is 8117562743. The next prime is 8117562773. The reversal of 8117562768 is 8672657118.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8117562768.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13688680 + ... + 13689272.

Almost surely, 2^8117562768 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 8117562768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12133794816).

8117562768 is an abundant number, since it is smaller than the sum of its proper divisors (16150026864).

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

8117562768 is a wasteful number, since it uses less digits than its factorization.

8117562768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1047 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 51.

The square root of 8117562768 is about 90097.5181012219. The cubic root of 8117562768 is about 2009.7492957282.

The spelling of 8117562768 in words is "eight billion, one hundred seventeen million, five hundred sixty-two thousand, seven hundred sixty-eight".