243343105555536 has 300 divisors, whose sum is σ = 862414959811680. Its totient is φ = 65867306440320.

The previous prime is 243343105555483. The next prime is 243343105555559. The reversal of 243343105555536 is 635555501343342.

243343105555536 is a `hidden beast` number, since 2 + 4 + 3 + 3 + 4 + 3 + 1 + 0 + 55 + 55 + 536 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 99633780 + ... + 102046931.

Almost surely, 2^{243343105555536} is an apocalyptic number.

It is an amenable number.

243343105555536 is an abundant number, since it is smaller than the sum of its proper divisors (619071854256144).

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

243343105555536 is a wasteful number, since it uses less digits than its factorization.

243343105555536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201680764 (or 201680742 counting only the distinct ones).

The product of its (nonzero) digits is 48600000, while the sum is 54.

Adding to 243343105555536 its reverse (635555501343342), we get a palindrome (878898606898878).

The spelling of 243343105555536 in words is "two hundred forty-three trillion, three hundred forty-three billion, one hundred five million, five hundred fifty-five thousand, five hundred thirty-six".