165369600000 has 1440 divisors, whose sum is σ = 696745249200. Its totient is φ = 38707200000.

The previous prime is 165369599981. The next prime is 165369600023. The reversal of 165369600000 is 6963561.

165369600000 is a `hidden beast` number, since 16 + 5 + 36 + 9 + 600 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

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 (13) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 5702399986 + ... + 5702400014.

Almost surely, 2^165369600000 is an apocalyptic number.

165369600000 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 165369600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348372624600).

165369600000 is an abundant number, since it is smaller than the sum of its proper divisors (531375649200).

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

165369600000 is an frugal number, since it uses more digits than its factorization.

165369600000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The spelling of 165369600000 in words is "one hundred sixty-five billion, three hundred sixty-nine million, six hundred thousand".