16514446057209 has 63 divisors (see below), whose sum is σ = 25385897878207. Its totient is φ = 10738177192800.

The previous prime is 16514446057201. The next prime is 16514446057211. The reversal of 16514446057209 is 90275064441561.

The square root of 16514446057209 is 4063797.

It is a perfect power (a square), and thus also a powerful number.

16514446057209 is a `hidden beast` number, since 1 + 6 + 5 + 1 + 4 + 4 + 4 + 60 + 572 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 795758554809 + 15718687502400 = 892053^2 + 3964680^2 .

It is not a de Polignac number, because 16514446057209 - 2³ = 16514446057201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16514446057201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 4498621444 + ... + 4498625114.

Almost surely, 2^{16514446057209} is an apocalyptic number.

16514446057209 is the 4063797-th square number.

16514446057209 is the 2031899-th centered octagonal number.

It is an amenable number.

16514446057209 is a deficient number, since it is larger than the sum of its proper divisors (8871451820998).

16514446057209 is an frugal number, since it uses more digits than its factorization.

16514446057209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7442 (or 3715 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 16514446057209 in words is "sixteen trillion, five hundred fourteen billion, four hundred forty-six million, fifty-seven thousand, two hundred nine".