41561021443349 has 2 divisors, whose sum is σ = 41561021443350. Its totient is φ = 41561021443348.

The previous prime is 41561021443309. The next prime is 41561021443367. The reversal of 41561021443349 is 94334412016514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32037977244100 + 9523044199249 = 5660210^2 + 3085943^2 .

It is a cyclic number.

It is not a de Polignac number, because 41561021443349 - 2⁸ = 41561021443093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41561021443309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20780510721674 + 20780510721675.

It is an arithmetic number, because the mean of its divisors is an integer number (20780510721675).

Almost surely, 2^{41561021443349} is an apocalyptic number.

It is an amenable number.

41561021443349 is a deficient number, since it is larger than the sum of its proper divisors (1).

41561021443349 is an equidigital number, since it uses as much as digits as its factorization.

41561021443349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 41561021443349 in words is "forty-one trillion, five hundred sixty-one billion, twenty-one million, four hundred forty-three thousand, three hundred forty-nine".