165100080 has 40 divisors (see below), whose sum is σ = 511810992. Its totient is φ = 44026624.

The previous prime is 165100043. The next prime is 165100087. The reversal of 165100080 is 80001561.

165100080 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 (40).

It is not an unprimeable number, because it can be changed into a prime (165100087) 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, 343719 + ... + 344198.

Almost surely, 2^165100080 is an apocalyptic number.

165100080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165100080 is an abundant number, since it is smaller than the sum of its proper divisors (346710912).

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

165100080 is a wasteful number, since it uses less digits than its factorization.

165100080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687933 (or 687927 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 165100080 is about 12849.1275968449. The cubic root of 165100080 is about 548.5915256464.

The spelling of 165100080 in words is "one hundred sixty-five million, one hundred thousand, eighty".