236164442161 has 2 divisors, whose sum is σ = 236164442162. Its totient is φ = 236164442160.

The previous prime is 236164442159. The next prime is 236164442183. The reversal of 236164442161 is 161244461632.

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., 233076528400 + 3087913761 = 482780^2 + 55569^2 .

It is a cyclic number.

It is not a de Polignac number, because 236164442161 - 2¹ = 236164442159 is a prime.

Together with 236164442159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (236164442461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118082221080 + 118082221081.

It is an arithmetic number, because the mean of its divisors is an integer number (118082221081).

Almost surely, 2^236164442161 is an apocalyptic number.

It is an amenable number.

236164442161 is a deficient number, since it is larger than the sum of its proper divisors (1).

236164442161 is an equidigital number, since it uses as much as digits as its factorization.

236164442161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 40.

The spelling of 236164442161 in words is "two hundred thirty-six billion, one hundred sixty-four million, four hundred forty-two thousand, one hundred sixty-one".