8181068568 has 32 divisors (see below), whose sum is σ = 20479734960. Its totient is φ = 2723414400.

The previous prime is 8181068549. The next prime is 8181068603. The reversal of 8181068568 is 8658601818.

It is a self number, because there is not a number n which added to its sum of digits gives 8181068568.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206983 + ... + 243318.

Almost surely, 2^8181068568 is an apocalyptic number.

It is an amenable number.

8181068568 is an abundant number, since it is smaller than the sum of its proper divisors (12298666392).

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

8181068568 is a wasteful number, since it uses less digits than its factorization.

8181068568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451067 (or 451063 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 51.

The square root of 8181068568 is about 90449.2596321274. The cubic root of 8181068568 is about 2014.9766178553.

The spelling of 8181068568 in words is "eight billion, one hundred eighty-one million, sixty-eight thousand, five hundred sixty-eight".