163444998912 has 288 divisors, whose sum is σ = 479031840000. Its totient is φ = 49163452416.

The previous prime is 163444998907. The next prime is 163444998919. The reversal of 163444998912 is 219899444361.

It is a super-3 number, since 3×163444998912³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (163444998919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264046539 + ... + 264047157.

It is an arithmetic number, because the mean of its divisors is an integer number (1663305000).

Almost surely, 2^163444998912 is an apocalyptic number.

163444998912 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 163444998912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239515920000).

163444998912 is an abundant number, since it is smaller than the sum of its proper divisors (315586841088).

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

163444998912 is a wasteful number, since it uses less digits than its factorization.

163444998912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1189 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 60.

The spelling of 163444998912 in words is "one hundred sixty-three billion, four hundred forty-four million, nine hundred ninety-eight thousand, nine hundred twelve".