243149030205 has 8 divisors (see below), whose sum is σ = 389038448352. Its totient is φ = 129679482768.

The previous prime is 243149030161. The next prime is 243149030213. The reversal of 243149030205 is 502030941342.

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

It is not a de Polignac number, because 243149030205 - 2¹⁸ = 243148768061 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8104967659 + ... + 8104967688.

It is an arithmetic number, because the mean of its divisors is an integer number (48629806044).

Almost surely, 2^243149030205 is an apocalyptic number.

It is an amenable number.

243149030205 is a deficient number, since it is larger than the sum of its proper divisors (145889418147).

243149030205 is a wasteful number, since it uses less digits than its factorization.

243149030205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16209935355.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 243149030205 its reverse (502030941342), we get a palindrome (745179971547).

The spelling of 243149030205 in words is "two hundred forty-three billion, one hundred forty-nine million, thirty thousand, two hundred five".