243053301033440 has 96 divisors (see below), whose sum is σ = 604573752424320. Its totient is φ = 92083293448704.

The previous prime is 243053301033329. The next prime is 243053301033457. The reversal of 243053301033440 is 44330103350342.

It is a self number, because there is not a number n which added to its sum of digits gives 243053301033440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4101047 + ... + 22425993.

It is an arithmetic number, because the mean of its divisors is an integer number (6297643254420).

Almost surely, 2^{243053301033440} is an apocalyptic number.

243053301033440 is a gapful number since it is divisible by the number (20) 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 243053301033440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302286876212160).

243053301033440 is an abundant number, since it is smaller than the sum of its proper divisors (361520451390880).

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

243053301033440 is a wasteful number, since it uses less digits than its factorization.

243053301033440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18329344 (or 18329336 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 35.

Adding to 243053301033440 its reverse (44330103350342), we get a palindrome (287383404383782).

The spelling of 243053301033440 in words is "two hundred forty-three trillion, fifty-three billion, three hundred one million, thirty-three thousand, four hundred forty".