243120353549 has 8 divisors (see below), whose sum is σ = 243633811200. Its totient is φ = 242607255696.

The previous prime is 243120353521. The next prime is 243120353551. The reversal of 243120353549 is 945353021342.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243120353549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243120353149) 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 7 ways as a sum of consecutive naturals, for example, 1285004 + ... + 1462010.

It is an arithmetic number, because the mean of its divisors is an integer number (30454226400).

Almost surely, 2^243120353549 is an apocalyptic number.

It is an amenable number.

243120353549 is a deficient number, since it is larger than the sum of its proper divisors (513457651).

243120353549 is a wasteful number, since it uses less digits than its factorization.

243120353549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179899.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 243120353549 in words is "two hundred forty-three billion, one hundred twenty million, three hundred fifty-three thousand, five hundred forty-nine".