165105012 has 24 divisors (see below), whose sum is σ = 386469216. Its totient is φ = 54860128.

The previous prime is 165104999. The next prime is 165105043. The reversal of 165105012 is 210501561.

It is a self number, because there is not a number n which added to its sum of digits gives 165105012.

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, 17898 + ... + 25505.

It is an arithmetic number, because the mean of its divisors is an integer number (16102884).

Almost surely, 2^165105012 is an apocalyptic number.

165105012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165105012 is an abundant number, since it is smaller than the sum of its proper divisors (221364204).

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

165105012 is a wasteful number, since it uses less digits than its factorization.

165105012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43727 (or 43725 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 165105012 is about 12849.3195150560. The cubic root of 165105012 is about 548.5969882451.

Adding to 165105012 its reverse (210501561), we get a palindrome (375606573).

The spelling of 165105012 in words is "one hundred sixty-five million, one hundred five thousand, twelve".