8081357866 has 8 divisors (see below), whose sum is σ = 12189009924. Its totient is φ = 4018354560.

The previous prime is 8081357857. The next prime is 8081357887. The reversal of 8081357866 is 6687531808.

It can be written as a sum of positive squares in 2 ways, for example, as 5539080625 + 2542277241 = 74425^2 + 50421^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11161735 + ... + 11162458.

Almost surely, 2^8081357866 is an apocalyptic number.

8081357866 is a deficient number, since it is larger than the sum of its proper divisors (4107652058).

8081357866 is a wasteful number, since it uses less digits than its factorization.

8081357866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22324376.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The square root of 8081357866 is about 89896.3729301689. The cubic root of 8081357866 is about 2006.7569681490.

The spelling of 8081357866 in words is "eight billion, eighty-one million, three hundred fifty-seven thousand, eight hundred sixty-six".