165120102050500 has 96 divisors (see below), whose sum is σ = 361589564464128. Its totient is φ = 65870997552000.

The previous prime is 165120102050471. The next prime is 165120102050509. The reversal of 165120102050500 is 5050201021561.

It is not an unprimeable number, because it can be changed into a prime (165120102050509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 602616529 + ... + 602890471.

It is an arithmetic number, because the mean of its divisors is an integer number (3766557963168).

Almost surely, 2^{165120102050500} is an apocalyptic number.

165120102050500 is a gapful number since it is divisible by the number (10) 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 165120102050500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180794782232064).

165120102050500 is an abundant number, since it is smaller than the sum of its proper divisors (196469462413628).

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

165120102050500 is a wasteful number, since it uses less digits than its factorization.

165120102050500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277190 (or 277178 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 165120102050500 in words is "one hundred sixty-five trillion, one hundred twenty billion, one hundred two million, fifty thousand, five hundred".