243455205444 has 96 divisors (see below), whose sum is σ = 640482619392. Its totient is φ = 71306544000.

The previous prime is 243455205403. The next prime is 243455205449. The reversal of 243455205444 is 444502554342.

It is a junction number, because it is equal to n+sod(n) for n = 243455205396 and 243455205405.

It is not an unprimeable number, because it can be changed into a prime (243455205449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3323299 + ... + 3395765.

It is an arithmetic number, because the mean of its divisors is an integer number (6671693952).

Almost surely, 2^243455205444 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 243455205444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320241309696).

243455205444 is an abundant number, since it is smaller than the sum of its proper divisors (397027413948).

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

243455205444 is a wasteful number, since it uses less digits than its factorization.

243455205444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73337 (or 73335 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 42.

Adding to 243455205444 its reverse (444502554342), we get a palindrome (687957759786).

The spelling of 243455205444 in words is "two hundred forty-three billion, four hundred fifty-five million, two hundred five thousand, four hundred forty-four".