165345065020 has 24 divisors (see below), whose sum is σ = 347749966368. Its totient is φ = 66037963200.

The previous prime is 165345064999. The next prime is 165345065023. The reversal of 165345065020 is 20560543561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165345065023) 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, 6240376 + ... + 6266815.

It is an arithmetic number, because the mean of its divisors is an integer number (14489581932).

Almost surely, 2^165345065020 is an apocalyptic number.

165345065020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165345065020 is an abundant number, since it is smaller than the sum of its proper divisors (182404901348).

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

165345065020 is a wasteful number, since it uses less digits than its factorization.

165345065020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12507861 (or 12507859 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 165345065020 in words is "one hundred sixty-five billion, three hundred forty-five million, sixty-five thousand, twenty".