8090810081 has 2 divisors, whose sum is σ = 8090810082. Its totient is φ = 8090810080.

The previous prime is 8090810003. The next prime is 8090810087. The reversal of 8090810081 is 1800180908.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5532979456 + 2557830625 = 74384^2 + 50575^2 .

It is a cyclic number.

It is not a de Polignac number, because 8090810081 - 2¹⁰ = 8090809057 is a prime.

It is a super-2 number, since 2×8090810081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8090810087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4045405040 + 4045405041.

It is an arithmetic number, because the mean of its divisors is an integer number (4045405041).

Almost surely, 2^8090810081 is an apocalyptic number.

It is an amenable number.

8090810081 is a deficient number, since it is larger than the sum of its proper divisors (1).

8090810081 is an equidigital number, since it uses as much as digits as its factorization.

8090810081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 8090810081 is about 89948.9304049804. The cubic root of 8090810081 is about 2007.5390523863.

Adding to 8090810081 its reverse (1800180908), we get a palindrome (9890990989).

The spelling of 8090810081 in words is "eight billion, ninety million, eight hundred ten thousand, eighty-one".