8210081066 has 16 divisors (see below), whose sum is σ = 13493869920. Its totient is φ = 3715412880.

The previous prime is 8210081053. The next prime is 8210081093. The reversal of 8210081066 is 6601800128.

It is a super-2 number, since 2×8210081066² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 817001 + ... + 826988.

It is an arithmetic number, because the mean of its divisors is an integer number (843366870).

Almost surely, 2^8210081066 is an apocalyptic number.

8210081066 is a deficient number, since it is larger than the sum of its proper divisors (5283788854).

8210081066 is a wasteful number, since it uses less digits than its factorization.

8210081066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644229.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 8210081066 is about 90609.4976589099. The cubic root of 8210081066 is about 2017.3557095154.

The spelling of 8210081066 in words is "eight billion, two hundred ten million, eighty-one thousand, sixty-six".