8581169041 has 2 divisors, whose sum is σ = 8581169042. Its totient is φ = 8581169040.

The previous prime is 8581169029. The next prime is 8581169071. The reversal of 8581169041 is 1409611858.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7620417025 + 960752016 = 87295^2 + 30996^2 .

It is a cyclic number.

It is not a de Polignac number, because 8581169041 - 2⁹ = 8581168529 is a prime.

It is a super-2 number, since 2×8581169041² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8581169021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4290584520 + 4290584521.

It is an arithmetic number, because the mean of its divisors is an integer number (4290584521).

Almost surely, 2^8581169041 is an apocalyptic number.

It is an amenable number.

8581169041 is a deficient number, since it is larger than the sum of its proper divisors (1).

8581169041 is an equidigital number, since it uses as much as digits as its factorization.

8581169041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 43.

The square root of 8581169041 is about 92634.5995889225. The cubic root of 8581169041 is about 2047.3031395056.

The spelling of 8581169041 in words is "eight billion, five hundred eighty-one million, one hundred sixty-nine thousand, forty-one".