41820404191 has 2 divisors, whose sum is σ = 41820404192. Its totient is φ = 41820404190.

The previous prime is 41820404117. The next prime is 41820404203. The reversal of 41820404191 is 19140402814.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 41820404191 - 2⁷ = 41820404063 is a prime.

It is a super-2 number, since 2×41820404191² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41820404111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20910202095 + 20910202096.

It is an arithmetic number, because the mean of its divisors is an integer number (20910202096).

Almost surely, 2^41820404191 is an apocalyptic number.

41820404191 is a deficient number, since it is larger than the sum of its proper divisors (1).

41820404191 is an equidigital number, since it uses as much as digits as its factorization.

41820404191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 34.

The spelling of 41820404191 in words is "forty-one billion, eight hundred twenty million, four hundred four thousand, one hundred ninety-one".