243121243448 has 16 divisors (see below), whose sum is σ = 457408145880. Its totient is φ = 121145737888.

The previous prime is 243121243447. The next prime is 243121243459. The reversal of 243121243448 is 844342121342.

243121243448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×243121243448³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243121243447) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 51857990 + ... + 51862677.

Almost surely, 2^243121243448 is an apocalyptic number.

It is an amenable number.

243121243448 is a deficient number, since it is larger than the sum of its proper divisors (214286902432).

243121243448 is a wasteful number, since it uses less digits than its factorization.

243121243448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103720966 (or 103720962 counting only the distinct ones).

The product of its digits is 147456, while the sum is 38.

The spelling of 243121243448 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-three thousand, four hundred forty-eight".