41581058581 has 2 divisors, whose sum is σ = 41581058582. Its totient is φ = 41581058580.

The previous prime is 41581058567. The next prime is 41581058641. The reversal of 41581058581 is 18585018514.

41581058581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21560223556 + 20020835025 = 146834^2 + 141495^2 .

It is a cyclic number.

It is not a de Polignac number, because 41581058581 - 2¹¹ = 41581056533 is a prime.

It is a super-2 number, since 2×41581058581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41581058521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20790529290 + 20790529291.

It is an arithmetic number, because the mean of its divisors is an integer number (20790529291).

Almost surely, 2^41581058581 is an apocalyptic number.

It is an amenable number.

41581058581 is a deficient number, since it is larger than the sum of its proper divisors (1).

41581058581 is an equidigital number, since it uses as much as digits as its factorization.

41581058581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256000, while the sum is 46.

The spelling of 41581058581 in words is "forty-one billion, five hundred eighty-one million, fifty-eight thousand, five hundred eighty-one".