243548422057444 has 81 divisors (see below), whose sum is σ = 497552258937699. Its totient is φ = 104009249337840.

The previous prime is 243548422057441. The next prime is 243548422057463. The reversal of 243548422057444 is 444750224845342.

It is a happy number.

The square root of 243548422057444 is 15606038.

It is a perfect power (a square), and thus also a powerful number.

243548422057444 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-3 number, since 3×243548422057444³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (243548422057441) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 67074749509 + ... + 67074753139.

Almost surely, 2^{243548422057444} is an apocalyptic number.

243548422057444 is the 15606038-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243548422057444

243548422057444 is an abundant number, since it is smaller than the sum of its proper divisors (254003836880255).

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

243548422057444 is an frugal number, since it uses more digits than its factorization.

243548422057444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7894 (or 3947 counting only the distinct ones).

The product of its (nonzero) digits is 137625600, while the sum is 58.

The spelling of 243548422057444 in words is "two hundred forty-three trillion, five hundred forty-eight billion, four hundred twenty-two million, fifty-seven thousand, four hundred forty-four".