41205261361109 has 2 divisors, whose sum is σ = 41205261361110. Its totient is φ = 41205261361108.

The previous prime is 41205261361039. The next prime is 41205261361127. The reversal of 41205261361109 is 90116316250214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38699223556900 + 2506037804209 = 6220870^2 + 1583047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41205261361109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41205261361129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20602630680554 + 20602630680555.

It is an arithmetic number, because the mean of its divisors is an integer number (20602630680555).

Almost surely, 2^{41205261361109} is an apocalyptic number.

It is an amenable number.

41205261361109 is a deficient number, since it is larger than the sum of its proper divisors (1).

41205261361109 is an equidigital number, since it uses as much as digits as its factorization.

41205261361109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 41205261361109 in words is "forty-one trillion, two hundred five billion, two hundred sixty-one million, three hundred sixty-one thousand, one hundred nine".