165995400480 has 384 divisors, whose sum is σ = 645454656000. Its totient is φ = 34919645184.

The previous prime is 165995400469. The next prime is 165995400503. The reversal of 165995400480 is 84004599561.

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, 15238876 + ... + 15249764.

It is an arithmetic number, because the mean of its divisors is an integer number (1680871500).

Almost surely, 2^165995400480 is an apocalyptic number.

165995400480 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 165995400480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322727328000).

165995400480 is an abundant number, since it is smaller than the sum of its proper divisors (479459255520).

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

165995400480 is a wasteful number, since it uses less digits than its factorization.

165995400480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11276 (or 11268 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 165995400480 in words is "one hundred sixty-five billion, nine hundred ninety-five million, four hundred thousand, four hundred eighty".