16460120209 has 27 divisors (see below), whose sum is σ = 18209249019. Its totient is φ = 14872188240.

The previous prime is 16460120207. The next prime is 16460120213. The reversal of 16460120209 is 90202106461.

The square root of 16460120209 is 128297.

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

It can be written as a sum of positive squares in only one way, i.e., 2434929025 + 14025191184 = 49345^2 + 118428^2 .

It is not a de Polignac number, because 16460120209 - 2¹ = 16460120207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16460120207) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 118418062 + ... + 118418200.

Almost surely, 2^16460120209 is an apocalyptic number.

16460120209 is the 128297-th square number.

16460120209 is the 64149-th centered octagonal number.

It is an amenable number.

16460120209 is a deficient number, since it is larger than the sum of its proper divisors (1749128810).

16460120209 is an frugal number, since it uses more digits than its factorization.

16460120209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

Multiplying 16460120209 by its product of nonzero digits (5184), we get a square (85329263163456 = 9237384²).

The spelling of 16460120209 in words is "sixteen billion, four hundred sixty million, one hundred twenty thousand, two hundred nine".