16773144321 has 32 divisors (see below), whose sum is σ = 23068717056. Its totient is φ = 10833920000.

The previous prime is 16773144307. The next prime is 16773144331. The reversal of 16773144321 is 12344137761.

It is a cyclic number.

It is not a de Polignac number, because 16773144321 - 2⁶ = 16773144257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16773144321.

It is not an unprimeable number, because it can be changed into a prime (16773144331) 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 31 ways as a sum of consecutive naturals, for example, 14572096 + ... + 14573246.

It is an arithmetic number, because the mean of its divisors is an integer number (720897408).

Almost surely, 2^16773144321 is an apocalyptic number.

It is an amenable number.

16773144321 is a deficient number, since it is larger than the sum of its proper divisors (6295572735).

16773144321 is a wasteful number, since it uses less digits than its factorization.

16773144321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913.

The product of its digits is 84672, while the sum is 39.

The spelling of 16773144321 in words is "sixteen billion, seven hundred seventy-three million, one hundred forty-four thousand, three hundred twenty-one".