243120717232 has 80 divisors (see below), whose sum is σ = 503288367840. Its totient is φ = 113575827456.

The previous prime is 243120717221. The next prime is 243120717233. The reversal of 243120717232 is 232717021342.

It is not an unprimeable number, because it can be changed into a prime (243120717233) 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, 1727503 + ... + 1862929.

It is an arithmetic number, because the mean of its divisors is an integer number (6291104598).

Almost surely, 2^243120717232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243120717232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251644183920).

243120717232 is an abundant number, since it is smaller than the sum of its proper divisors (260167650608).

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

243120717232 is a wasteful number, since it uses less digits than its factorization.

243120717232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135590 (or 135584 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

Adding to 243120717232 its reverse (232717021342), we get a palindrome (475837738574).

The spelling of 243120717232 in words is "two hundred forty-three billion, one hundred twenty million, seven hundred seventeen thousand, two hundred thirty-two".