11489043168 has 144 divisors (see below), whose sum is σ = 34445882016. Its totient is φ = 3625205760.

The previous prime is 11489043161. The next prime is 11489043211. The reversal of 11489043168 is 86134098411.

11489043168 is a `hidden beast` number, since 1 + 1 + 489 + 0 + 4 + 3 + 168 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×11489043168² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11489043161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 633588 + ... + 651468.

It is an arithmetic number, because the mean of its divisors is an integer number (239207514).

Almost surely, 2^11489043168 is an apocalyptic number.

11489043168 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 11489043168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17222941008).

11489043168 is an abundant number, since it is smaller than the sum of its proper divisors (22956838848).

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

11489043168 is a wasteful number, since it uses less digits than its factorization.

11489043168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18017 (or 18006 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 11489043168 in words is "eleven billion, four hundred eighty-nine million, forty-three thousand, one hundred sixty-eight".