243120244256 has 12 divisors (see below), whose sum is σ = 478642980942. Its totient is φ = 121560122112.

The previous prime is 243120244249. The next prime is 243120244259. The reversal of 243120244256 is 652442021342.

It can be written as a sum of positive squares in only one way, i.e., 242769056656 + 351187600 = 492716^2 + 18740^2 .

It is not an unprimeable number, because it can be changed into a prime (243120244259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3798753785 + ... + 3798753848.

Almost surely, 2^243120244256 is an apocalyptic number.

It is an amenable number.

243120244256 is a deficient number, since it is larger than the sum of its proper divisors (235522736686).

243120244256 is an equidigital number, since it uses as much as digits as its factorization.

243120244256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7597507643 (or 7597507635 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 243120244256 its reverse (652442021342), we get a palindrome (895562265598).

The spelling of 243120244256 in words is "two hundred forty-three billion, one hundred twenty million, two hundred forty-four thousand, two hundred fifty-six".