8081600000 has 120 divisors (see below), whose sum is σ = 20186973576. Its totient is φ = 3232000000.

The previous prime is 8081599957. The next prime is 8081600069. The reversal of 8081600000 is 61808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1597475 + ... + 1602525.

Almost surely, 2^8081600000 is an apocalyptic number.

8081600000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8081600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10093486788).

8081600000 is an abundant number, since it is smaller than the sum of its proper divisors (12105373576).

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

8081600000 is an frugal number, since it uses more digits than its factorization.

8081600000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5094 (or 5058 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 8081600000 is about 89897.7196596221. The cubic root of 8081600000 is about 2006.7770101291. Note that the first 3 decimals are identical.

Adding to 8081600000 its reverse (61808), we get a palindrome (8081661808).

The spelling of 8081600000 in words is "eight billion, eighty-one million, six hundred thousand".