243040043222240 has 384 divisors, whose sum is σ = 664716031451136. Its totient is φ = 82992881664000.

The previous prime is 243040043222227. The next prime is 243040043222281. The reversal of 243040043222240 is 42222340040342.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 243040043222197 and 243040043222206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26300184020 + ... + 26300193260.

It is an arithmetic number, because the mean of its divisors is an integer number (1731031331904).

Almost surely, 2^{243040043222240} is an apocalyptic number.

243040043222240 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 243040043222240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332358015725568).

243040043222240 is an abundant number, since it is smaller than the sum of its proper divisors (421675988228896).

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

243040043222240 is a wasteful number, since it uses less digits than its factorization.

243040043222240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11162 (or 11154 counting only the distinct ones).

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

Adding to 243040043222240 its reverse (42222340040342), we get a palindrome (285262383262582).

The spelling of 243040043222240 in words is "two hundred forty-three trillion, forty billion, forty-three million, two hundred twenty-two thousand, two hundred forty".