8081280000 has 660 divisors, whose sum is σ = 30925388208. Its totient is φ = 2027520000.

The previous prime is 8081279963. The next prime is 8081280017. The reversal of 8081280000 is 821808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 132479970 + ... + 132480030.

Almost surely, 2^8081280000 is an apocalyptic number.

8081280000 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 8081280000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15462694104).

8081280000 is an abundant number, since it is smaller than the sum of its proper divisors (22844108208).

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

8081280000 is a wasteful number, since it uses less digits than its factorization.

8081280000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 8081280000 is about 89895.9398415746. The cubic root of 8081280000 is about 2006.7505229186.

The spelling of 8081280000 in words is "eight billion, eighty-one million, two hundred eighty thousand".