243040335005 has 8 divisors (see below), whose sum is σ = 314082894552. Its totient is φ = 179475939648.

The previous prime is 243040334989. The next prime is 243040335037. The reversal of 243040335005 is 500533040342.

243040335005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 48165764089 + 194874570916 = 219467^2 + 441446^2 .

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 243040335005 - 2⁴ = 243040334989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1869540974 + ... + 1869541103.

It is an arithmetic number, because the mean of its divisors is an integer number (39260361819).

Almost surely, 2^243040335005 is an apocalyptic number.

It is an amenable number.

243040335005 is a deficient number, since it is larger than the sum of its proper divisors (71042559547).

243040335005 is a wasteful number, since it uses less digits than its factorization.

243040335005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3739082095.

The product of its (nonzero) digits is 21600, while the sum is 29.

Adding to 243040335005 its reverse (500533040342), we get a palindrome (743573375347).

The spelling of 243040335005 in words is "two hundred forty-three billion, forty million, three hundred thirty-five thousand, five".