16564645534133 has 8 divisors (see below), whose sum is σ = 16739317434840. Its totient is φ = 16390053273600.

The previous prime is 16564645534117. The next prime is 16564645534183. The reversal of 16564645534133 is 33143554646561.

It can be written as a sum of positive squares in 4 ways, for example, as 1465460355844 + 15099185178289 = 1210562^2 + 3885767^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16564645534133 - 2⁴ = 16564645534117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16564645534183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19491818 + ... + 20323883.

It is an arithmetic number, because the mean of its divisors is an integer number (2092414679355).

Almost surely, 2^{16564645534133} is an apocalyptic number.

It is an amenable number.

16564645534133 is a deficient number, since it is larger than the sum of its proper divisors (174671900707).

16564645534133 is an equidigital number, since it uses as much as digits as its factorization.

16564645534133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39820087.

The product of its digits is 46656000, while the sum is 56.

The spelling of 16564645534133 in words is "sixteen trillion, five hundred sixty-four billion, six hundred forty-five million, five hundred thirty-four thousand, one hundred thirty-three".