243052025440 has 192 divisors, whose sum is σ = 663216906240. Its totient is φ = 82448916480.

The previous prime is 243052025423. The next prime is 243052025471. The reversal of 243052025440 is 44520250342.

It is a congruent number.

It is an unprimeable number.

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, 90995305 + ... + 90997975.

It is an arithmetic number, because the mean of its divisors is an integer number (3454254720).

Almost surely, 2^243052025440 is an apocalyptic number.

243052025440 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 243052025440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331608453120).

243052025440 is an abundant number, since it is smaller than the sum of its proper divisors (420164880800).

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

243052025440 is a wasteful number, since it uses less digits than its factorization.

243052025440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3525 (or 3517 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 243052025440 its reverse (44520250342), we get a palindrome (287572275782).

The spelling of 243052025440 in words is "two hundred forty-three billion, fifty-two million, twenty-five thousand, four hundred forty".