163243234044 has 144 divisors (see below), whose sum is σ = 470292207840. Its totient is φ = 47288640000.

The previous prime is 163243234039. The next prime is 163243234069. The reversal of 163243234044 is 440432342361.

163243234044 is a `hidden beast` number, since 1 + 6 + 3 + 243 + 2 + 3 + 404 + 4 = 666.

It is a super-2 number, since 2×163243234044² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1089514 + ... + 1230254.

It is an arithmetic number, because the mean of its divisors is an integer number (3265918110).

Almost surely, 2^163243234044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163243234044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235146103920).

163243234044 is an abundant number, since it is smaller than the sum of its proper divisors (307048973796).

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

163243234044 is a wasteful number, since it uses less digits than its factorization.

163243234044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140892 (or 140887 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

The spelling of 163243234044 in words is "one hundred sixty-three billion, two hundred forty-three million, two hundred thirty-four thousand, forty-four".