411116161 has 2 divisors, whose sum is σ = 411116162. Its totient is φ = 411116160.

The previous prime is 411116159. The next prime is 411116227. The reversal of 411116161 is 161611114.

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., 348009025 + 63107136 = 18655^2 + 7944^2 .

It is a cyclic number.

It is not a de Polignac number, because 411116161 - 2¹ = 411116159 is a prime.

Together with 411116159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (411116131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205558080 + 205558081.

It is an arithmetic number, because the mean of its divisors is an integer number (205558081).

Almost surely, 2^411116161 is an apocalyptic number.

It is an amenable number.

411116161 is a deficient number, since it is larger than the sum of its proper divisors (1).

411116161 is an equidigital number, since it uses as much as digits as its factorization.

411116161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 22.

The square root of 411116161 is about 20275.9996301046. Note that the first 3 decimals coincide. The cubic root of 411116161 is about 743.5694126819.

Adding to 411116161 its reverse (161611114), we get a palindrome (572727275).

The spelling of 411116161 in words is "four hundred eleven million, one hundred sixteen thousand, one hundred sixty-one".