16564047675664 has 20 divisors (see below), whose sum is σ = 32097418782156. Its totient is φ = 8280842828672.

The previous prime is 16564047675647. The next prime is 16564047675673. The reversal of 16564047675664 is 46657674046561.

It can be written as a sum of positive squares in 2 ways, for example, as 15625102179600 + 938945496064 = 3952860^2 + 968992^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16564047675664.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73697359 + ... + 73921774.

Almost surely, 2^{16564047675664} is an apocalyptic number.

It is an amenable number.

16564047675664 is a deficient number, since it is larger than the sum of its proper divisors (15533371106492).

16564047675664 is a wasteful number, since it uses less digits than its factorization.

16564047675664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147626154 (or 147626148 counting only the distinct ones).

The product of its (nonzero) digits is 609638400, while the sum is 67.

The spelling of 16564047675664 in words is "sixteen trillion, five hundred sixty-four billion, forty-seven million, six hundred seventy-five thousand, six hundred sixty-four".