16321016562673 has 4 divisors (see below), whose sum is σ = 16321146361408. Its totient is φ = 16320886763940.

The previous prime is 16321016562647. The next prime is 16321016562691. The reversal of 16321016562673 is 37626561012361.

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 not a de Polignac number, because 16321016562673 - 2²¹ = 16321014465521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16321016662673) 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 3 ways as a sum of consecutive naturals, for example, 64710573 + ... + 64962298.

It is an arithmetic number, because the mean of its divisors is an integer number (4080286590352).

Almost surely, 2^{16321016562673} is an apocalyptic number.

It is an amenable number.

16321016562673 is a deficient number, since it is larger than the sum of its proper divisors (129798735).

16321016562673 is a wasteful number, since it uses less digits than its factorization.

16321016562673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129798734.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 16321016562673 in words is "sixteen trillion, three hundred twenty-one billion, sixteen million, five hundred sixty-two thousand, six hundred seventy-three".