163542641328 has 160 divisors (see below), whose sum is σ = 512364230400. Its totient is φ = 49533120000.

The previous prime is 163542641309. The next prime is 163542641371. The reversal of 163542641328 is 823146245361.

163542641328 is a `hidden beast` number, since 1 + 6 + 354 + 264 + 1 + 32 + 8 = 666.

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, 10689108 + ... + 10704396.

It is an arithmetic number, because the mean of its divisors is an integer number (3202276440).

Almost surely, 2^163542641328 is an apocalyptic number.

163542641328 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 163542641328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256182115200).

163542641328 is an abundant number, since it is smaller than the sum of its proper divisors (348821589072).

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

163542641328 is a wasteful number, since it uses less digits than its factorization.

163542641328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17568 (or 17556 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

Adding to 163542641328 its reverse (823146245361), we get a palindrome (986688886689).

The spelling of 163542641328 in words is "one hundred sixty-three billion, five hundred forty-two million, six hundred forty-one thousand, three hundred twenty-eight".