165628302173 has 4 divisors (see below), whose sum is σ = 167724863040. Its totient is φ = 163531741308.

The previous prime is 165628302149. The next prime is 165628302239. The reversal of 165628302173 is 371203826561.

165628302173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 165628302173 - 2¹⁸ = 165628040029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165628302773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048280315 + ... + 1048280472.

It is an arithmetic number, because the mean of its divisors is an integer number (41931215760).

Almost surely, 2^165628302173 is an apocalyptic number.

It is an amenable number.

165628302173 is a deficient number, since it is larger than the sum of its proper divisors (2096560867).

165628302173 is an equidigital number, since it uses as much as digits as its factorization.

165628302173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096560866.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 165628302173 in words is "one hundred sixty-five billion, six hundred twenty-eight million, three hundred two thousand, one hundred seventy-three".