243205241504 has 24 divisors (see below), whose sum is σ = 479640182868. Its totient is φ = 121391861760.

The previous prime is 243205241479. The next prime is 243205241533. The reversal of 243205241504 is 405142502342.

It can be written as a sum of positive squares in 2 ways, for example, as 164722339600 + 78482901904 = 405860^2 + 280148^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6567467 + ... + 6604394.

Almost surely, 2^243205241504 is an apocalyptic number.

It is an amenable number.

243205241504 is a deficient number, since it is larger than the sum of its proper divisors (236434941364).

243205241504 is a wasteful number, since it uses less digits than its factorization.

243205241504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13172448 (or 13172440 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 243205241504 its reverse (405142502342), we get a palindrome (648347743846).

The spelling of 243205241504 in words is "two hundred forty-three billion, two hundred five million, two hundred forty-one thousand, five hundred four".