16546573136573 has 2 divisors, whose sum is σ = 16546573136574. Its totient is φ = 16546573136572.

The previous prime is 16546573136563. The next prime is 16546573136617. The reversal of 16546573136573 is 37563137564561.

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., 11172419895289 + 5374153241284 = 3342517^2 + 2318222^2 .

It is a cyclic number.

It is not a de Polignac number, because 16546573136573 - 2¹⁶ = 16546573071037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16546573136563) 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, 8273286568286 + 8273286568287.

It is an arithmetic number, because the mean of its divisors is an integer number (8273286568287).

Almost surely, 2^{16546573136573} is an apocalyptic number.

It is an amenable number.

16546573136573 is a deficient number, since it is larger than the sum of its proper divisors (1).

16546573136573 is an equidigital number, since it uses as much as digits as its factorization.

16546573136573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884000, while the sum is 62.

The spelling of 16546573136573 in words is "sixteen trillion, five hundred forty-six billion, five hundred seventy-three million, one hundred thirty-six thousand, five hundred seventy-three".