16566231022573 has 4 divisors (see below), whose sum is σ = 16567164506880. Its totient is φ = 16565297538268.

The previous prime is 16566231022511. The next prime is 16566231022577. The reversal of 16566231022573 is 37522013266561.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-16566231022573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16566231022577) 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, 466715533 + ... + 466751026.

It is an arithmetic number, because the mean of its divisors is an integer number (4141791126720).

Almost surely, 2^{16566231022573} is an apocalyptic number.

It is an amenable number.

16566231022573 is a deficient number, since it is larger than the sum of its proper divisors (933484307).

16566231022573 is an equidigital number, since it uses as much as digits as its factorization.

16566231022573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933484306.

The product of its (nonzero) digits is 2721600, while the sum is 49.

The spelling of 16566231022573 in words is "sixteen trillion, five hundred sixty-six billion, two hundred thirty-one million, twenty-two thousand, five hundred seventy-three".