216104041112161 has 2 divisors, whose sum is σ = 216104041112162. Its totient is φ = 216104041112160.

The previous prime is 216104041112117. The next prime is 216104041112203. The reversal of 216104041112161 is 161211140401612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130703062311936 + 85400978800225 = 11432544^2 + 9241265^2 .

It is a cyclic number.

It is not a de Polignac number, because 216104041112161 - 2⁷ = 216104041112033 is a prime.

It is not a weakly prime, because it can be changed into another prime (216104041112261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108052020556080 + 108052020556081.

It is an arithmetic number, because the mean of its divisors is an integer number (108052020556081).

Almost surely, 2^{216104041112161} is an apocalyptic number.

It is an amenable number.

216104041112161 is a deficient number, since it is larger than the sum of its proper divisors (1).

216104041112161 is an equidigital number, since it uses as much as digits as its factorization.

216104041112161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 31.

Adding to 216104041112161 its reverse (161211140401612), we get a palindrome (377315181513773).

The spelling of 216104041112161 in words is "two hundred sixteen trillion, one hundred four billion, forty-one million, one hundred twelve thousand, one hundred sixty-one".