165500016 has 80 divisors (see below), whose sum is σ = 468386688. Its totient is φ = 49939200.

The previous prime is 165500011. The next prime is 165500017. The reversal of 165500016 is 610005561.

165500016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165500011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161586 + ... + 162606.

Almost surely, 2^165500016 is an apocalyptic number.

165500016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165500016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234193344).

165500016 is an abundant number, since it is smaller than the sum of its proper divisors (302886672).

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

165500016 is a wasteful number, since it uses less digits than its factorization.

165500016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 165500016 is about 12864.6809521263. The cubic root of 165500016 is about 549.0341351233.

Adding to 165500016 its reverse (610005561), we get a palindrome (775505577).

The spelling of 165500016 in words is "one hundred sixty-five million, five hundred thousand, sixteen".