165320016 has 20 divisors (see below), whose sum is σ = 427076832. Its totient is φ = 55106656.

The previous prime is 165320003. The next prime is 165320059. The reversal of 165320016 is 610023561.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1722036 + ... + 1722131.

Almost surely, 2^165320016 is an apocalyptic number.

165320016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165320016 is an abundant number, since it is smaller than the sum of its proper divisors (261756816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165320016 is a wasteful number, since it uses less digits than its factorization.

165320016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444178 (or 3444172 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 165320016 is about 12857.6831505524. The cubic root of 165320016 is about 548.8350173294.

Adding to 165320016 its reverse (610023561), we get a palindrome (775343577).

The spelling of 165320016 in words is "one hundred sixty-five million, three hundred twenty thousand, sixteen".