165925883136 has 576 divisors, whose sum is σ = 519868016640. Its totient is φ = 46568079360.

The previous prime is 165925883063. The next prime is 165925883153. The reversal of 165925883136 is 631388529561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 501286491 + ... + 501286821.

It is an arithmetic number, because the mean of its divisors is an integer number (902548640).

Almost surely, 2^165925883136 is an apocalyptic number.

165925883136 is a gapful number since it is divisible by the number (16) 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 165925883136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259934008320).

165925883136 is an abundant number, since it is smaller than the sum of its proper divisors (353942133504).

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

165925883136 is a wasteful number, since it uses less digits than its factorization.

165925883136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 468 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 57.

The spelling of 165925883136 in words is "one hundred sixty-five billion, nine hundred twenty-five million, eight hundred eighty-three thousand, one hundred thirty-six".