243054340353 has 48 divisors (see below), whose sum is σ = 387190003200. Its totient is φ = 145694039040.

The previous prime is 243054340351. The next prime is 243054340367. The reversal of 243054340353 is 353043450342.

243054340353 is a `hidden beast` number, since 2 + 4 + 305 + 4 + 340 + 3 + 5 + 3 = 666.

It is not a de Polignac number, because 243054340353 - 2¹ = 243054340351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243054340351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16884483 + ... + 16898871.

It is an arithmetic number, because the mean of its divisors is an integer number (8066458400).

Almost surely, 2^243054340353 is an apocalyptic number.

It is an amenable number.

243054340353 is a deficient number, since it is larger than the sum of its proper divisors (144135662847).

243054340353 is a wasteful number, since it uses less digits than its factorization.

243054340353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16262 (or 16259 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 36.

Adding to 243054340353 its reverse (353043450342), we get a palindrome (596097790695).

The spelling of 243054340353 in words is "two hundred forty-three billion, fifty-four million, three hundred forty thousand, three hundred fifty-three".