16564717471233 has 4 divisors (see below), whose sum is σ = 22086289961648. Its totient is φ = 11043144980820.

The previous prime is 16564717471163. The next prime is 16564717471261. The reversal of 16564717471233 is 33217471746561.

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 not a de Polignac number, because 16564717471233 - 2²⁸ = 16564449035777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16564717491233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2760786245203 + ... + 2760786245208.

It is an arithmetic number, because the mean of its divisors is an integer number (5521572490412).

Almost surely, 2^{16564717471233} is an apocalyptic number.

It is an amenable number.

16564717471233 is a deficient number, since it is larger than the sum of its proper divisors (5521572490415).

16564717471233 is an equidigital number, since it uses as much as digits as its factorization.

16564717471233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5521572490414.

The product of its digits is 17781120, while the sum is 57.

The spelling of 16564717471233 in words is "sixteen trillion, five hundred sixty-four billion, seven hundred seventeen million, four hundred seventy-one thousand, two hundred thirty-three".