164044120012169 has 2 divisors, whose sum is σ = 164044120012170. Its totient is φ = 164044120012168.

The previous prime is 164044120012163. The next prime is 164044120012237. The reversal of 164044120012169 is 961210021440461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124473918476944 + 39570201535225 = 11156788^2 + 6290485^2 .

It is a cyclic number.

It is not a de Polignac number, because 164044120012169 - 2²⁴ = 164044103234953 is a prime.

It is a super-2 number, since 2×164044120012169² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (164044120012163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82022060006084 + 82022060006085.

It is an arithmetic number, because the mean of its divisors is an integer number (82022060006085).

Almost surely, 2^{164044120012169} is an apocalyptic number.

It is an amenable number.

164044120012169 is a deficient number, since it is larger than the sum of its proper divisors (1).

164044120012169 is an equidigital number, since it uses as much as digits as its factorization.

164044120012169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 164044120012169 in words is "one hundred sixty-four trillion, forty-four billion, one hundred twenty million, twelve thousand, one hundred sixty-nine".