16514307021321 has 24 divisors (see below), whose sum is σ = 23868849713280. Its totient is φ = 11002684934016.

The previous prime is 16514307021263. The next prime is 16514307021343. The reversal of 16514307021321 is 12312070341561.

16514307021321 is a `hidden beast` number, since 1 + 6 + 5 + 1 + 4 + 307 + 0 + 21 + 321 = 666.

It is not a de Polignac number, because 16514307021321 - 2¹⁸ = 16514306759177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16514307021361) 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 23 ways as a sum of consecutive naturals, for example, 219517905 + ... + 219593121.

It is an arithmetic number, because the mean of its divisors is an integer number (994535404720).

Almost surely, 2^{16514307021321} is an apocalyptic number.

It is an amenable number.

16514307021321 is a deficient number, since it is larger than the sum of its proper divisors (7354542691959).

16514307021321 is a wasteful number, since it uses less digits than its factorization.

16514307021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90085 (or 90082 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

Adding to 16514307021321 its reverse (12312070341561), we get a palindrome (28826377362882).

The spelling of 16514307021321 in words is "sixteen trillion, five hundred fourteen billion, three hundred seven million, twenty-one thousand, three hundred twenty-one".