165909073030 has 32 divisors (see below), whose sum is σ = 299250443520. Its totient is φ = 66227251200.

The previous prime is 165909073021. The next prime is 165909073061. The reversal of 165909073030 is 30370909561.

It is a happy number.

It is a super-3 number, since 3×165909073030³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

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, 24799926 + ... + 24806614.

It is an arithmetic number, because the mean of its divisors is an integer number (9351576360).

Almost surely, 2^165909073030 is an apocalyptic number.

165909073030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165909073030 is a deficient number, since it is larger than the sum of its proper divisors (133341370490).

165909073030 is a wasteful number, since it uses less digits than its factorization.

165909073030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11424.

The product of its (nonzero) digits is 153090, while the sum is 43.

The spelling of 165909073030 in words is "one hundred sixty-five billion, nine hundred nine million, seventy-three thousand, thirty".