161144112823 has 2 divisors, whose sum is σ = 161144112824. Its totient is φ = 161144112822.

The previous prime is 161144112817. The next prime is 161144112853. The reversal of 161144112823 is 328211441161.

It is a weak prime.

It is an emirp because it is prime and its reverse (328211441161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161144112823 - 2²⁹ = 160607241911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161144112853) 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, 80572056411 + 80572056412.

It is an arithmetic number, because the mean of its divisors is an integer number (80572056412).

Almost surely, 2^161144112823 is an apocalyptic number.

161144112823 is a deficient number, since it is larger than the sum of its proper divisors (1).

161144112823 is an equidigital number, since it uses as much as digits as its factorization.

161144112823 is an odious number, because the sum of its binary digits is odd.

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

Adding to 161144112823 its reverse (328211441161), we get a palindrome (489355553984).

The spelling of 161144112823 in words is "one hundred sixty-one billion, one hundred forty-four million, one hundred twelve thousand, eight hundred twenty-three".