8081406668 has 6 divisors (see below), whose sum is σ = 14142461676. Its totient is φ = 4040703332.

The previous prime is 8081406653. The next prime is 8081406691. The reversal of 8081406668 is 8666041808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010175830 + ... + 1010175837.

It is an arithmetic number, because the mean of its divisors is an integer number (2357076946).

Almost surely, 2^8081406668 is an apocalyptic number.

It is an amenable number.

8081406668 is a deficient number, since it is larger than the sum of its proper divisors (6061055008).

8081406668 is a wasteful number, since it uses less digits than its factorization.

8081406668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020351671 (or 2020351669 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 47.

The square root of 8081406668 is about 89896.6443645145. The cubic root of 8081406668 is about 2006.7610076334.

The spelling of 8081406668 in words is "eight billion, eighty-one million, four hundred six thousand, six hundred sixty-eight".