41809512113 has 2 divisors, whose sum is σ = 41809512114. Its totient is φ = 41809512112.

The previous prime is 41809512097. The next prime is 41809512133. The reversal of 41809512113 is 31121590814.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39391134784 + 2418377329 = 198472^2 + 49177^2 .

It is a cyclic number.

It is not a de Polignac number, because 41809512113 - 2⁴ = 41809512097 is a prime.

It is not a weakly prime, because it can be changed into another prime (41809512133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20904756056 + 20904756057.

It is an arithmetic number, because the mean of its divisors is an integer number (20904756057).

Almost surely, 2^41809512113 is an apocalyptic number.

It is an amenable number.

41809512113 is a deficient number, since it is larger than the sum of its proper divisors (1).

41809512113 is an equidigital number, since it uses as much as digits as its factorization.

41809512113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 35.

The spelling of 41809512113 in words is "forty-one billion, eight hundred nine million, five hundred twelve thousand, one hundred thirteen".