165016880 has 40 divisors (see below), whose sum is σ = 438474912. Its totient is φ = 56577024.

The previous prime is 165016867. The next prime is 165016883. The reversal of 165016880 is 88610561.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 165016880.

It is not an unprimeable number, because it can be changed into a prime (165016883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146777 + ... + 147896.

Almost surely, 2^165016880 is an apocalyptic number.

165016880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165016880 is an abundant number, since it is smaller than the sum of its proper divisors (273458032).

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

165016880 is a wasteful number, since it uses less digits than its factorization.

165016880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294693 (or 294687 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 165016880 is about 12845.8896149702. The cubic root of 165016880 is about 548.4993583498.

The spelling of 165016880 in words is "one hundred sixty-five million, sixteen thousand, eight hundred eighty".