16292952821209 has 9 divisors (see below), whose sum is σ = 16680848165109. Its totient is φ = 15913877410620.

The previous prime is 16292952821203. The next prime is 16292952821221. The reversal of 16292952821209 is 90212825929261.

The square root of 16292952821209 is 4036453.

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

It is not a de Polignac number, because 16292952821209 - 2¹⁷ = 16292952690137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16292952821203) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 173520544 + ... + 173614414.

It is an arithmetic number, because the mean of its divisors is an integer number (1853427573901).

Almost surely, 2^{16292952821209} is an apocalyptic number.

16292952821209 is the 4036453-rd square number.

16292952821209 is the 2018227-th centered octagonal number.

It is an amenable number.

16292952821209 is a deficient number, since it is larger than the sum of its proper divisors (387895343900).

16292952821209 is an frugal number, since it uses more digits than its factorization.

16292952821209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187828 (or 93914 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 58.

The spelling of 16292952821209 in words is "sixteen trillion, two hundred ninety-two billion, nine hundred fifty-two million, eight hundred twenty-one thousand, two hundred nine".