16643605622833 has 16 divisors (see below), whose sum is σ = 20023186549120. Its totient is φ = 13514565730176.

The previous prime is 16643605622827. The next prime is 16643605622857. The reversal of 16643605622833 is 33822650634661.

It is not a de Polignac number, because 16643605622833 - 2⁹ = 16643605622321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16643605626833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 829891 + ... + 5828887.

It is an arithmetic number, because the mean of its divisors is an integer number (1251449159320).

Almost surely, 2^{16643605622833} is an apocalyptic number.

It is an amenable number.

16643605622833 is a deficient number, since it is larger than the sum of its proper divisors (3379580926287).

16643605622833 is a wasteful number, since it uses less digits than its factorization.

16643605622833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024056.

The product of its (nonzero) digits is 22394880, while the sum is 55.

The spelling of 16643605622833 in words is "sixteen trillion, six hundred forty-three billion, six hundred five million, six hundred twenty-two thousand, eight hundred thirty-three".