16564044336041 has 4 divisors (see below), whose sum is σ = 16565195670672. Its totient is φ = 16562893001412.

The previous prime is 16564044336019. The next prime is 16564044336079. The reversal of 16564044336041 is 14063344046561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16564044336041 - 2¹⁴ = 16564044319657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16564044306041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575645735 + ... + 575674508.

It is an arithmetic number, because the mean of its divisors is an integer number (4141298917668).

Almost surely, 2^{16564044336041} is an apocalyptic number.

It is an amenable number.

16564044336041 is a deficient number, since it is larger than the sum of its proper divisors (1151334631).

16564044336041 is a wasteful number, since it uses less digits than its factorization.

16564044336041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151334630.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 16564044336041 in words is "sixteen trillion, five hundred sixty-four billion, forty-four million, three hundred thirty-six thousand, forty-one".