163808381952 has 132 divisors (see below), whose sum is σ = 476399701960. Its totient is φ = 54209544192.

The previous prime is 163808381833. The next prime is 163808382007. The reversal of 163808381952 is 259183808361.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1217088 + ... + 1344960.

Almost surely, 2^163808381952 is an apocalyptic number.

163808381952 is a gapful number since it is divisible by the number (12) 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 163808381952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238199850980).

163808381952 is an abundant number, since it is smaller than the sum of its proper divisors (312591320008).

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

163808381952 is a wasteful number, since it uses less digits than its factorization.

163808381952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128038 (or 128017 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 163808381952 in words is "one hundred sixty-three billion, eight hundred eight million, three hundred eighty-one thousand, nine hundred fifty-two".