18236660206085 has 8 divisors (see below), whose sum is σ = 23171285909016. Its totient is φ = 13731132390400.

The previous prime is 18236660206073. The next prime is 18236660206099. The reversal of 18236660206085 is 58060206663281.

It can be written as a sum of positive squares in 4 ways, for example, as 7604352244801 + 10632307961284 = 2757599^2 + 3260722^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18236660206085 - 2¹⁶ = 18236660140549 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107274471716 + ... + 107274471885.

It is an arithmetic number, because the mean of its divisors is an integer number (2896410738627).

Almost surely, 2^{18236660206085} is an apocalyptic number.

It is an amenable number.

18236660206085 is a deficient number, since it is larger than the sum of its proper divisors (4934625702931).

18236660206085 is a wasteful number, since it uses less digits than its factorization.

18236660206085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214548943623.

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 18236660206085 in words is "eighteen trillion, two hundred thirty-six billion, six hundred sixty million, two hundred six thousand, eighty-five".