41809512091 has 2 divisors, whose sum is σ = 41809512092. Its totient is φ = 41809512090.

The previous prime is 41809512067. The next prime is 41809512097. The reversal of 41809512091 is 19021590814.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 41809512091 - 2¹⁵ = 41809479323 is a prime.

It is not a weakly prime, because it can be changed into another prime (41809512097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20904756045 + 20904756046.

It is an arithmetic number, because the mean of its divisors is an integer number (20904756046).

Almost surely, 2^41809512091 is an apocalyptic number.

41809512091 is a deficient number, since it is larger than the sum of its proper divisors (1).

41809512091 is an equidigital number, since it uses as much as digits as its factorization.

41809512091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 40.

The spelling of 41809512091 in words is "forty-one billion, eight hundred nine million, five hundred twelve thousand, ninety-one".