165112821984 has 192 divisors, whose sum is σ = 494956707840. Its totient is φ = 47737536000.

The previous prime is 165112821971. The next prime is 165112822019. The reversal of 165112821984 is 489128211561.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2288737 + ... + 2359775.

It is an arithmetic number, because the mean of its divisors is an integer number (2577899520).

Almost surely, 2^165112821984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165112821984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247478353920).

165112821984 is an abundant number, since it is smaller than the sum of its proper divisors (329843885856).

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

165112821984 is a wasteful number, since it uses less digits than its factorization.

165112821984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71165 (or 71157 counting only the distinct ones).

The product of its digits is 276480, while the sum is 48.

The spelling of 165112821984 in words is "one hundred sixty-five billion, one hundred twelve million, eight hundred twenty-one thousand, nine hundred eighty-four".