8081568768 has 176 divisors, whose sum is σ = 26512088960. Its totient is φ = 2131329024.

The previous prime is 8081568767. The next prime is 8081568779. The reversal of 8081568768 is 8678651808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8081568767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265098 + ... + 294006.

Almost surely, 2^8081568768 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 8081568768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13256044480).

8081568768 is an abundant number, since it is smaller than the sum of its proper divisors (18430520192).

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

8081568768 is a wasteful number, since it uses less digits than its factorization.

8081568768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28952 (or 28934 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 57.

The square root of 8081568768 is about 89897.5459509324. The cubic root of 8081568768 is about 2006.7744250081.

The spelling of 8081568768 in words is "eight billion, eighty-one million, five hundred sixty-eight thousand, seven hundred sixty-eight".