243034400440 has 64 divisors (see below), whose sum is σ = 589059475200. Its totient is φ = 89710113792.

The previous prime is 243034400381. The next prime is 243034400447. The reversal of 243034400440 is 44004430342.

It is a junction number, because it is equal to n+sod(n) for n = 243034400399 and 243034400408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243034400447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1803321 + ... + 1933399.

It is an arithmetic number, because the mean of its divisors is an integer number (9204054300).

Almost surely, 2^243034400440 is an apocalyptic number.

243034400440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243034400440 is an abundant number, since it is smaller than the sum of its proper divisors (346025074760).

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

243034400440 is a wasteful number, since it uses less digits than its factorization.

243034400440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133696 (or 133692 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 243034400440 its reverse (44004430342), we get a palindrome (287038830782).

The spelling of 243034400440 in words is "two hundred forty-three billion, thirty-four million, four hundred thousand, four hundred forty".