243113122550 has 24 divisors (see below), whose sum is σ = 452248575816. Its totient is φ = 97232739840.

The previous prime is 243113122523. The next prime is 243113122559. The reversal of 243113122550 is 55221311342.

It is a super-2 number, since 2×243113122550² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243113122559) 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 11 ways as a sum of consecutive naturals, for example, 84857 + ... + 702443.

It is an arithmetic number, because the mean of its divisors is an integer number (18843690659).

Almost surely, 2^243113122550 is an apocalyptic number.

243113122550 is a deficient number, since it is larger than the sum of its proper divisors (209135453266).

243113122550 is a wasteful number, since it uses less digits than its factorization.

243113122550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625472 (or 625467 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 243113122550 its reverse (55221311342), we get a palindrome (298334433892).

The spelling of 243113122550 in words is "two hundred forty-three billion, one hundred thirteen million, one hundred twenty-two thousand, five hundred fifty".