8081934561 has 12 divisors (see below), whose sum is σ = 11794256292. Its totient is φ = 5332409856.

The previous prime is 8081934529. The next prime is 8081934569. The reversal of 8081934561 is 1654391808.

8081934561 is a `hidden beast` number, since 8 + 0 + 8 + 193 + 456 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1833980625 + 6247953936 = 42825^2 + 79044^2 .

It is not a de Polignac number, because 8081934561 - 2⁵ = 8081934529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8081934569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4627956 + ... + 4629701.

It is an arithmetic number, because the mean of its divisors is an integer number (982854691).

Almost surely, 2^8081934561 is an apocalyptic number.

It is an amenable number.

8081934561 is a deficient number, since it is larger than the sum of its proper divisors (3712321731).

8081934561 is a wasteful number, since it uses less digits than its factorization.

8081934561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9257760 (or 9257757 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 8081934561 is about 89899.5804272745. The cubic root of 8081934561 is about 2006.8047018427.

The spelling of 8081934561 in words is "eight billion, eighty-one million, nine hundred thirty-four thousand, five hundred sixty-one".