16565434560242 has 16 divisors (see below), whose sum is σ = 25674392140800. Its totient is φ = 8007818159520.

The previous prime is 16565434560239. The next prime is 16565434560247. The reversal of 16565434560242 is 24206543456561.

It is not an unprimeable number, because it can be changed into a prime (16565434560247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128513267 + ... + 128642102.

It is an arithmetic number, because the mean of its divisors is an integer number (1604649508800).

Almost surely, 2^{16565434560242} is an apocalyptic number.

16565434560242 is a deficient number, since it is larger than the sum of its proper divisors (9108957580558).

16565434560242 is a wasteful number, since it uses less digits than its factorization.

16565434560242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257156441.

The product of its (nonzero) digits is 20736000, while the sum is 53.

The spelling of 16565434560242 in words is "sixteen trillion, five hundred sixty-five billion, four hundred thirty-four million, five hundred sixty thousand, two hundred forty-two".