243042555550 has 48 divisors (see below), whose sum is σ = 478481094000. Its totient is φ = 91591430400.

The previous prime is 243042555523. The next prime is 243042555593. The reversal of 243042555550 is 55555240342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 534775 + ... + 878674.

It is an arithmetic number, because the mean of its divisors is an integer number (9968356125).

Almost surely, 2^243042555550 is an apocalyptic number.

243042555550 is a deficient number, since it is larger than the sum of its proper divisors (235438538450).

243042555550 is a wasteful number, since it uses less digits than its factorization.

243042555550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413661 (or 1413656 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 40.

Adding to 243042555550 its reverse (55555240342), we get a palindrome (298597795892).

The spelling of 243042555550 in words is "two hundred forty-three billion, forty-two million, five hundred fifty-five thousand, five hundred fifty".