8130808081 has 6 divisors (see below), whose sum is σ = 8937169346. Its totient is φ = 7391643600.

The previous prime is 8130808067. The next prime is 8130808139. The reversal of 8130808081 is 1808080318.

It can be written as a sum of positive squares in only one way, i.e., 5521233025 + 2609575056 = 74305^2 + 51084^2 .

It is not a de Polignac number, because 8130808081 - 2⁷ = 8130807953 is a prime.

It is a super-2 number, since 2×8130808081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8130808081.

It is not an unprimeable number, because it can be changed into a prime (8130808001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33598260 + ... + 33598501.

Almost surely, 2^8130808081 is an apocalyptic number.

It is an amenable number.

8130808081 is a deficient number, since it is larger than the sum of its proper divisors (806361265).

8130808081 is a wasteful number, since it uses less digits than its factorization.

8130808081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67196783 (or 67196772 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 37.

The square root of 8130808081 is about 90170.9935677766. The cubic root of 8130808081 is about 2010.8417949582.

Adding to 8130808081 its reverse (1808080318), we get a palindrome (9938888399).

The spelling of 8130808081 in words is "eight billion, one hundred thirty million, eight hundred eight thousand, eighty-one".