165486718320 has 640 divisors, whose sum is σ = 675316776960. Its totient is φ = 32477552640.

The previous prime is 165486718303. The next prime is 165486718351. The reversal of 165486718320 is 23817684561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 176612892 + ... + 176613828.

It is an arithmetic number, because the mean of its divisors is an integer number (1055182464).

Almost surely, 2^165486718320 is an apocalyptic number.

165486718320 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 165486718320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337658388480).

165486718320 is an abundant number, since it is smaller than the sum of its proper divisors (509830058640).

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

165486718320 is a wasteful number, since it uses less digits than its factorization.

165486718320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493 (or 1487 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 165486718320 in words is "one hundred sixty-five billion, four hundred eighty-six million, seven hundred eighteen thousand, three hundred twenty".