16564573303745 has 8 divisors (see below), whose sum is σ = 20149782320616. Its totient is φ = 13070129072256.

The previous prime is 16564573303741. The next prime is 16564573303757. The reversal of 16564573303745 is 54730337546561.

16564573303745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3690944119489 + 12873629184256 = 1921183^2 + 3587984^2 .

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 16564573303745 - 2² = 16564573303741 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16564573303741) 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, 22691195942 + ... + 22691196671.

It is an arithmetic number, because the mean of its divisors is an integer number (2518722790077).

Almost surely, 2^{16564573303745} is an apocalyptic number.

It is an amenable number.

16564573303745 is a deficient number, since it is larger than the sum of its proper divisors (3585209016871).

16564573303745 is an equidigital number, since it uses as much as digits as its factorization.

16564573303745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45382392691.

The product of its (nonzero) digits is 95256000, while the sum is 59.

The spelling of 16564573303745 in words is "sixteen trillion, five hundred sixty-four billion, five hundred seventy-three million, three hundred three thousand, seven hundred forty-five".