243232222440 has 128 divisors (see below), whose sum is σ = 731797493760. Its totient is φ = 64675494144.

The previous prime is 243232222439. The next prime is 243232222489. The reversal of 243232222440 is 44222232342.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 243232222398 and 243232222407.

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, 76318527 + ... + 76321713.

It is an arithmetic number, because the mean of its divisors is an integer number (5717167920).

Almost surely, 2^243232222440 is an apocalyptic number.

243232222440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243232222440 is an abundant number, since it is smaller than the sum of its proper divisors (488565271320).

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

243232222440 is a wasteful number, since it uses less digits than its factorization.

243232222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4831 (or 4827 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 243232222440 its reverse (44222232342), we get a palindrome (287454454782).

The spelling of 243232222440 in words is "two hundred forty-three billion, two hundred thirty-two million, two hundred twenty-two thousand, four hundred forty".