8581008816 has 60 divisors (see below), whose sum is σ = 24789593920. Its totient is φ = 2768065920.

The previous prime is 8581008773. The next prime is 8581008829. The reversal of 8581008816 is 6188001858.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 956671 + ... + 965598.

Almost surely, 2^8581008816 is an apocalyptic number.

It is an amenable number.

8581008816 is an abundant number, since it is smaller than the sum of its proper divisors (16208585104).

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

8581008816 is a wasteful number, since it uses less digits than its factorization.

8581008816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922314 (or 1922305 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 45.

The square root of 8581008816 is about 92633.7347622344. The cubic root of 8581008816 is about 2047.2903972174.

The spelling of 8581008816 in words is "eight billion, five hundred eighty-one million, eight thousand, eight hundred sixteen".