243005375242044 has 144 divisors (see below), whose sum is σ = 637767448141824. Its totient is φ = 77933299046400.

The previous prime is 243005375241973. The next prime is 243005375242127. The reversal of 243005375242044 is 440242573500342.

It is a happy number.

243005375242044 is a `hidden beast` number, since 2 + 4 + 3 + 0 + 0 + 537 + 52 + 4 + 20 + 44 = 666.

243005375242044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×243005375242044² (a number of 30 digits) contains 22 as substring.

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, 340602849 + ... + 341315559.

It is an arithmetic number, because the mean of its divisors is an integer number (4428940612096).

Almost surely, 2^{243005375242044} 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 243005375242044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318883724070912).

243005375242044 is an abundant number, since it is smaller than the sum of its proper divisors (394762072899780).

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

243005375242044 is a wasteful number, since it uses less digits than its factorization.

243005375242044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714528 (or 714523 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 45.

The spelling of 243005375242044 in words is "two hundred forty-three trillion, five billion, three hundred seventy-five million, two hundred forty-two thousand, forty-four".