5618020208165 has 4 divisors (see below), whose sum is σ = 6741624249804. Its totient is φ = 4494416166528.

The previous prime is 5618020208123. The next prime is 5618020208221.

5618020208165 is nontrivially palindromic in base 10.

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 703986443521 + 4914033764644 = 839039^2 + 2216762^2 .

It is a cyclic number.

It is not a de Polignac number, because 5618020208165 - 2¹⁶ = 5618020142629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 561802020812 + ... + 561802020821.

It is an arithmetic number, because the mean of its divisors is an integer number (1685406062451).

Almost surely, 2^{5618020208165} is an apocalyptic number.

It is an amenable number.

5618020208165 is a deficient number, since it is larger than the sum of its proper divisors (1123604041639).

5618020208165 is a wasteful number, since it uses less digits than its factorization.

5618020208165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123604041638.

The product of its (nonzero) digits is 230400, while the sum is 44.

The spelling of 5618020208165 in words is "five trillion, six hundred eighteen billion, twenty million, two hundred eight thousand, one hundred sixty-five".