243422043440 has 40 divisors (see below), whose sum is σ = 566448173568. Its totient is φ = 97284185600.

The previous prime is 243422043437. The next prime is 243422043581. The reversal of 243422043440 is 44340224342.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 243422043397 and 243422043406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229717 + ... + 1413876.

Almost surely, 2^243422043440 is an apocalyptic number.

243422043440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243422043440 is an abundant number, since it is smaller than the sum of its proper divisors (323026130128).

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

243422043440 is a wasteful number, since it uses less digits than its factorization.

243422043440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644757 (or 2644751 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 243422043440 its reverse (44340224342), we get a palindrome (287762267782).

The spelling of 243422043440 in words is "two hundred forty-three billion, four hundred twenty-two million, forty-three thousand, four hundred forty".