243123503552 has 56 divisors (see below), whose sum is σ = 501264631200. Its totient is φ = 116857230336.

The previous prime is 243123503533. The next prime is 243123503563. The reversal of 243123503552 is 255305321342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139013 + ... + 711035.

Almost surely, 2^243123503552 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 243123503552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250632315600).

243123503552 is an abundant number, since it is smaller than the sum of its proper divisors (258141127648).

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

243123503552 is a wasteful number, since it uses less digits than its factorization.

243123503552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572293 (or 572283 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 243123503552 its reverse (255305321342), we get a palindrome (498428824894).

The spelling of 243123503552 in words is "two hundred forty-three billion, one hundred twenty-three million, five hundred three thousand, five hundred fifty-two".