243385843427 has 4 divisors (see below), whose sum is σ = 256195624680. Its totient is φ = 230576062176.

The previous prime is 243385843367. The next prime is 243385843469. The reversal of 243385843427 is 724348583342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243385843427 - 2¹² = 243385839331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243385840427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6404890598 + ... + 6404890635.

It is an arithmetic number, because the mean of its divisors is an integer number (64048906170).

Almost surely, 2^243385843427 is an apocalyptic number.

243385843427 is a deficient number, since it is larger than the sum of its proper divisors (12809781253).

243385843427 is a wasteful number, since it uses less digits than its factorization.

243385843427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12809781252.

The product of its digits is 15482880, while the sum is 53.

The spelling of 243385843427 in words is "two hundred forty-three billion, three hundred eighty-five million, eight hundred forty-three thousand, four hundred twenty-seven".