165276720000 has 1280 divisors, whose sum is σ = 738753523200. Its totient is φ = 35500032000.

The previous prime is 165276719969. The next prime is 165276720013. The reversal of 165276720000 is 27672561.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 159 ways as a sum of consecutive naturals, for example, 257039679 + ... + 257040321.

It is an arithmetic number, because the mean of its divisors is an integer number (577151190).

Almost surely, 2^165276720000 is an apocalyptic number.

165276720000 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 165276720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369376761600).

165276720000 is an abundant number, since it is smaller than the sum of its proper divisors (573476803200).

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

165276720000 is an equidigital number, since it uses as much as digits as its factorization.

165276720000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The spelling of 165276720000 in words is "one hundred sixty-five billion, two hundred seventy-six million, seven hundred twenty thousand".