168529465728 has 384 divisors, whose sum is σ = 573491711520. Its totient is φ = 48802922496.

The previous prime is 168529465703. The next prime is 168529465729. The reversal of 168529465728 is 827564925861.

168529465728 is a `hidden beast` number, since 1 + 6 + 8 + 52 + 9 + 4 + 6 + 572 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168529465729) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6861726 + ... + 6886242.

Almost surely, 2^168529465728 is an apocalyptic number.

168529465728 is a gapful number since it is divisible by the number (18) 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 168529465728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286745855760).

168529465728 is an abundant number, since it is smaller than the sum of its proper divisors (404962245792).

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

168529465728 is a wasteful number, since it uses less digits than its factorization.

168529465728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24576 (or 24552 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 63.

The spelling of 168529465728 in words is "one hundred sixty-eight billion, five hundred twenty-nine million, four hundred sixty-five thousand, seven hundred twenty-eight".