41045041561 has 2 divisors, whose sum is σ = 41045041562. Its totient is φ = 41045041560.

The previous prime is 41045041501. The next prime is 41045041601. The reversal of 41045041561 is 16514054014.

41045041561 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., 40576059225 + 468982336 = 201435^2 + 21656^2 .

It is a cyclic number.

It is not a de Polignac number, because 41045041561 - 2²¹ = 41042944409 is a prime.

It is not a weakly prime, because it can be changed into another prime (41045041501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20522520780 + 20522520781.

It is an arithmetic number, because the mean of its divisors is an integer number (20522520781).

Almost surely, 2^41045041561 is an apocalyptic number.

It is an amenable number.

41045041561 is a deficient number, since it is larger than the sum of its proper divisors (1).

41045041561 is an equidigital number, since it uses as much as digits as its factorization.

41045041561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 41045041561 its reverse (16514054014), we get a palindrome (57559095575).

The spelling of 41045041561 in words is "forty-one billion, forty-five million, forty-one thousand, five hundred sixty-one".