165165516 has 36 divisors (see below), whose sum is σ = 417932424. Its totient is φ = 54998400.

The previous prime is 165165509. The next prime is 165165529. The reversal of 165165516 is 615561561.

165165516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47311 + ... + 50681.

It is an arithmetic number, because the mean of its divisors is an integer number (11609234).

Almost surely, 2^165165516 is an apocalyptic number.

It is an amenable number.

165165516 is an abundant number, since it is smaller than the sum of its proper divisors (252766908).

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

165165516 is a wasteful number, since it uses less digits than its factorization.

165165516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742 (or 4737 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 165165516 is about 12851.6736653247. The cubic root of 165165516 is about 548.6639925880.

The spelling of 165165516 in words is "one hundred sixty-five million, one hundred sixty-five thousand, five hundred sixteen".