18516850000185 has 8 divisors (see below), whose sum is σ = 29626960000320. Its totient is φ = 9875653333424.

The previous prime is 18516850000177. The next prime is 18516850000199. The reversal of 18516850000185 is 58100005861581.

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

It is a cyclic number.

It is not a de Polignac number, because 18516850000185 - 2³ = 18516850000177 is a prime.

It is a Curzon 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, 617228333325 + ... + 617228333354.

It is an arithmetic number, because the mean of its divisors is an integer number (3703370000040).

Almost surely, 2^{18516850000185} is an apocalyptic number.

18516850000185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18516850000185 is a deficient number, since it is larger than the sum of its proper divisors (11110110000135).

18516850000185 is a wasteful number, since it uses less digits than its factorization.

18516850000185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234456666687.

The product of its (nonzero) digits is 384000, while the sum is 48.

The spelling of 18516850000185 in words is "eighteen trillion, five hundred sixteen billion, eight hundred fifty million, one hundred eighty-five", and thus it is an aban number.