243434225320 has 128 divisors (see below), whose sum is σ = 646157191680. Its totient is φ = 81372672000.

The previous prime is 243434225297. The next prime is 243434225327. The reversal of 243434225320 is 23522434342.

It is not an unprimeable number, because it can be changed into a prime (243434225327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1290225 + ... + 1466815.

It is an arithmetic number, because the mean of its divisors is an integer number (5048103060).

Almost surely, 2^243434225320 is an apocalyptic number.

243434225320 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 243434225320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323078595840).

243434225320 is an abundant number, since it is smaller than the sum of its proper divisors (402722966360).

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

243434225320 is a wasteful number, since it uses less digits than its factorization.

243434225320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176867 (or 176863 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 34.

Adding to 243434225320 its reverse (23522434342), we get a palindrome (266956659662).

The spelling of 243434225320 in words is "two hundred forty-three billion, four hundred thirty-four million, two hundred twenty-five thousand, three hundred twenty".