165120535460020 has 48 divisors (see below), whose sum is σ = 396322393235328. Its totient is φ = 56608025281920.

The previous prime is 165120535460003. The next prime is 165120535460071. The reversal of 165120535460020 is 20064535021561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47586127 + ... + 50938006.

It is an arithmetic number, because the mean of its divisors is an integer number (8256716525736).

Almost surely, 2^{165120535460020} is an apocalyptic number.

165120535460020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165120535460020 is an abundant number, since it is smaller than the sum of its proper divisors (231201857775308).

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

165120535460020 is a wasteful number, since it uses less digits than its factorization.

165120535460020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98536120 (or 98536118 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 165120535460020 in words is "one hundred sixty-five trillion, one hundred twenty billion, five hundred thirty-five million, four hundred sixty thousand, twenty".