485665428609 has 63 divisors (see below), whose sum is σ = 743690306163. Its totient is φ = 317015657712.

The previous prime is 485665428607. The next prime is 485665428613. The reversal of 485665428609 is 906824566584.

The square root of 485665428609 is 696897.

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

485665428609 is a `hidden beast` number, since 4 + 8 + 5 + 6 + 6 + 542 + 86 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 350114807025 + 135550621584 = 591705^2 + 368172^2 .

It is not a de Polignac number, because 485665428609 - 2¹ = 485665428607 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (485665428607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 997259364 + ... + 997259850.

Almost surely, 2^485665428609 is an apocalyptic number.

485665428609 is the 696897-th square number.

485665428609 is the 348449-th centered octagonal number.

It is an amenable number.

485665428609 is a deficient number, since it is larger than the sum of its proper divisors (258024877554).

485665428609 is an frugal number, since it uses more digits than its factorization.

485665428609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 63.

The spelling of 485665428609 in words is "four hundred eighty-five billion, six hundred sixty-five million, four hundred twenty-eight thousand, six hundred nine".