8081327616 has 80 divisors (see below), whose sum is σ = 21568244544. Its totient is φ = 2688886784.

The previous prime is 8081327581. The next prime is 8081327623. The reversal of 8081327616 is 6167231808.

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, 897151 + ... + 906113.

Almost surely, 2^8081327616 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 8081327616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10784122272).

8081327616 is an abundant number, since it is smaller than the sum of its proper divisors (13486916928).

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

8081327616 is an equidigital number, since it uses as much as digits as its factorization.

8081327616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9571 (or 9555 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 8081327616 is about 89896.2046807317. The cubic root of 8081327616 is about 2006.7544642598.

The spelling of 8081327616 in words is "eight billion, eighty-one million, three hundred twenty-seven thousand, six hundred sixteen".