243232455505 has 8 divisors (see below), whose sum is σ = 314331173352. Its totient is φ = 179617813248.

The previous prime is 243232455497. The next prime is 243232455509. The reversal of 243232455505 is 505554232342.

It can be written as a sum of positive squares in 4 ways, for example, as 2442039889 + 240790415616 = 49417^2 + 490704^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243232455505 - 2³ = 243232455497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243232455509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1871018824 + ... + 1871018953.

It is an arithmetic number, because the mean of its divisors is an integer number (39291396669).

Almost surely, 2^243232455505 is an apocalyptic number.

It is an amenable number.

243232455505 is a deficient number, since it is larger than the sum of its proper divisors (71098717847).

243232455505 is a wasteful number, since it uses less digits than its factorization.

243232455505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742037795.

The product of its (nonzero) digits is 720000, while the sum is 40.

Adding to 243232455505 its reverse (505554232342), we get a palindrome (748786687847).

The spelling of 243232455505 in words is "two hundred forty-three billion, two hundred thirty-two million, four hundred fifty-five thousand, five hundred five".