8181696896 has 64 divisors (see below), whose sum is σ = 18008736480. Its totient is φ = 3682787328.

The previous prime is 8181696871. The next prime is 8181696923. The reversal of 8181696896 is 6986961818.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

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, 31691 + ... + 131786.

Almost surely, 2^8181696896 is an apocalyptic number.

It is an amenable number.

8181696896 is an abundant number, since it is smaller than the sum of its proper divisors (9827039584).

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

8181696896 is a wasteful number, since it uses less digits than its factorization.

8181696896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163531 (or 163519 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 62.

The square root of 8181696896 is about 90452.7329382590. The cubic root of 8181696896 is about 2015.0282017369.

The spelling of 8181696896 in words is "eight billion, one hundred eighty-one million, six hundred ninety-six thousand, eight hundred ninety-six".