165015012 has 48 divisors (see below), whose sum is σ = 391591872. Its totient is φ = 54076800.

The previous prime is 165014987. The next prime is 165015029. The reversal of 165015012 is 210510561.

It is a self number, because there is not a number n which added to its sum of digits gives 165015012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209283 + ... + 210069.

It is an arithmetic number, because the mean of its divisors is an integer number (8158164).

Almost surely, 2^165015012 is an apocalyptic number.

165015012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165015012 is an abundant number, since it is smaller than the sum of its proper divisors (226576860).

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

165015012 is a wasteful number, since it uses less digits than its factorization.

165015012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068 (or 1066 counting only the distinct ones).

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

The square root of 165015012 is about 12845.8169066821. The cubic root of 165015012 is about 548.4972886612.

Adding to 165015012 its reverse (210510561), we get a palindrome (375525573).

The spelling of 165015012 in words is "one hundred sixty-five million, fifteen thousand, twelve".