165168992000 has 432 divisors, whose sum is σ = 438851885472. Its totient is φ = 61900800000.

The previous prime is 165168991991. The next prime is 165168992033. The reversal of 165168992000 is 299861561.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1260831935 + ... + 1260832065.

It is an arithmetic number, because the mean of its divisors is an integer number (1015860846).

Almost surely, 2^165168992000 is an apocalyptic number.

165168992000 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 165168992000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219425942736).

165168992000 is an abundant number, since it is smaller than the sum of its proper divisors (273682893472).

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

165168992000 is an equidigital number, since it uses as much as digits as its factorization.

165168992000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 165168992000 in words is "one hundred sixty-five billion, one hundred sixty-eight million, nine hundred ninety-two thousand".