210144213244169 has 2 divisors, whose sum is σ = 210144213244170. Its totient is φ = 210144213244168.

The previous prime is 210144213244127. The next prime is 210144213244219. The reversal of 210144213244169 is 961442312441012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191994610988944 + 18149602255225 = 13856212^2 + 4260235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210144213244169 is a prime.

It is a super-2 number, since 2×210144213244169² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210144213204169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105072106622084 + 105072106622085.

It is an arithmetic number, because the mean of its divisors is an integer number (105072106622085).

Almost surely, 2^{210144213244169} is an apocalyptic number.

It is an amenable number.

210144213244169 is a deficient number, since it is larger than the sum of its proper divisors (1).

210144213244169 is an equidigital number, since it uses as much as digits as its factorization.

210144213244169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 210144213244169 in words is "two hundred ten trillion, one hundred forty-four billion, two hundred thirteen million, two hundred forty-four thousand, one hundred sixty-nine".