165812084704 has 72 divisors (see below), whose sum is σ = 381539756808. Its totient is φ = 70725392640.

The previous prime is 165812084693. The next prime is 165812084723. The reversal of 165812084704 is 407480218561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80262 + ... + 581434.

It is an arithmetic number, because the mean of its divisors is an integer number (5299163289).

Almost surely, 2^165812084704 is an apocalyptic number.

165812084704 is a gapful number since it is divisible by the number (14) 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 165812084704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190769878404).

165812084704 is an abundant number, since it is smaller than the sum of its proper divisors (215727672104).

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

165812084704 is a wasteful number, since it uses less digits than its factorization.

165812084704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501408 (or 501393 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 165812084704 in words is "one hundred sixty-five billion, eight hundred twelve million, eighty-four thousand, seven hundred four".