81226034041 has 2 divisors, whose sum is σ = 81226034042. Its totient is φ = 81226034040.

The previous prime is 81226034033. The next prime is 81226034053. The reversal of 81226034041 is 14043062218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66304190016 + 14921844025 = 257496^2 + 122155^2 .

It is a cyclic number.

It is not a de Polignac number, because 81226034041 - 2³ = 81226034033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81226033994 and 81226034012.

It is not a weakly prime, because it can be changed into another prime (81226034011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40613017020 + 40613017021.

It is an arithmetic number, because the mean of its divisors is an integer number (40613017021).

Almost surely, 2^81226034041 is an apocalyptic number.

It is an amenable number.

81226034041 is a deficient number, since it is larger than the sum of its proper divisors (1).

81226034041 is an equidigital number, since it uses as much as digits as its factorization.

81226034041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 81226034041 its reverse (14043062218), we get a palindrome (95269096259).

The spelling of 81226034041 in words is "eighty-one billion, two hundred twenty-six million, thirty-four thousand, forty-one".