18382816560305 has 4 divisors (see below), whose sum is σ = 22059379872372. Its totient is φ = 14706253248240.

The previous prime is 18382816560299. The next prime is 18382816560307. The reversal of 18382816560305 is 50306561828381.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14118888915121 + 4263927645184 = 3757511^2 + 2064928^2 .

It is not a de Polignac number, because 18382816560305 - 2¹⁰ = 18382816559281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18382816560307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1838281656026 + ... + 1838281656035.

It is an arithmetic number, because the mean of its divisors is an integer number (5514844968093).

Almost surely, 2^{18382816560305} is an apocalyptic number.

It is an amenable number.

18382816560305 is a deficient number, since it is larger than the sum of its proper divisors (3676563312067).

18382816560305 is an equidigital number, since it uses as much as digits as its factorization.

18382816560305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3676563312066.

The product of its (nonzero) digits is 8294400, while the sum is 56.

The spelling of 18382816560305 in words is "eighteen trillion, three hundred eighty-two billion, eight hundred sixteen million, five hundred sixty thousand, three hundred five".