165500000285 has 8 divisors (see below), whose sum is σ = 200831461560. Its totient is φ = 130912359424.

The previous prime is 165500000279. The next prime is 165500000287. The reversal of 165500000285 is 582000005561.

It can be written as a sum of positive squares in 4 ways, for example, as 1058396089 + 164441604196 = 32533^2 + 405514^2 .

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 165500000285 - 2⁶ = 165500000221 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165500000287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185954612 + ... + 185955501.

It is an arithmetic number, because the mean of its divisors is an integer number (25103932695).

Almost surely, 2^165500000285 is an apocalyptic number.

It is an amenable number.

165500000285 is a deficient number, since it is larger than the sum of its proper divisors (35331461275).

165500000285 is an equidigital number, since it uses as much as digits as its factorization.

165500000285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371910207.

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 165500000285 in words is "one hundred sixty-five billion, five hundred million, two hundred eighty-five", and thus it is an aban number.