16565434560241 has 16 divisors (see below), whose sum is σ = 20114929739520. Its totient is φ = 13363711886400.

The previous prime is 16565434560239. The next prime is 16565434560247. The reversal of 16565434560241 is 14206543456561.

It is not a de Polignac number, because 16565434560241 - 2¹ = 16565434560239 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 240805285 + ... + 240874066.

It is an arithmetic number, because the mean of its divisors is an integer number (1257183108720).

Almost surely, 2^{16565434560241} is an apocalyptic number.

It is an amenable number.

16565434560241 is a deficient number, since it is larger than the sum of its proper divisors (3549495179279).

16565434560241 is an frugal number, since it uses more digits than its factorization.

16565434560241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481679409 (or 481679375 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 52.

The spelling of 16565434560241 in words is "sixteen trillion, five hundred sixty-five billion, four hundred thirty-four million, five hundred sixty thousand, two hundred forty-one".