16434165122173 has 2 divisors, whose sum is σ = 16434165122174. Its totient is φ = 16434165122172.

The previous prime is 16434165122117. The next prime is 16434165122317. The reversal of 16434165122173 is 37122156143461.

It is a happy number.

Together with next prime (16434165122317) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15786779134564 + 647385987609 = 3973258^2 + 804603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16434165122173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16434165120173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8217082561086 + 8217082561087.

It is an arithmetic number, because the mean of its divisors is an integer number (8217082561087).

Almost surely, 2^{16434165122173} is an apocalyptic number.

It is an amenable number.

16434165122173 is a deficient number, since it is larger than the sum of its proper divisors (1).

16434165122173 is an equidigital number, since it uses as much as digits as its factorization.

16434165122173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 46.

The spelling of 16434165122173 in words is "sixteen trillion, four hundred thirty-four billion, one hundred sixty-five million, one hundred twenty-two thousand, one hundred seventy-three".