41438563081 has 2 divisors, whose sum is σ = 41438563082. Its totient is φ = 41438563080.

The previous prime is 41438563039. The next prime is 41438563087. The reversal of 41438563081 is 18036583414.

41438563081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21364207225 + 20074355856 = 146165^2 + 141684^2 .

It is a cyclic number.

It is not a de Polignac number, because 41438563081 - 2²⁵ = 41405008649 is a prime.

It is a super-2 number, since 2×41438563081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (41438563087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20719281540 + 20719281541.

It is an arithmetic number, because the mean of its divisors is an integer number (20719281541).

Almost surely, 2^41438563081 is an apocalyptic number.

It is an amenable number.

41438563081 is a deficient number, since it is larger than the sum of its proper divisors (1).

41438563081 is an equidigital number, since it uses as much as digits as its factorization.

41438563081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 41438563081 in words is "forty-one billion, four hundred thirty-eight million, five hundred sixty-three thousand, eighty-one".