243122049992 has 32 divisors (see below), whose sum is σ = 492814977600. Its totient is φ = 112050558144.

The previous prime is 243122049991. The next prime is 243122050001. The reversal of 243122049992 is 299940221342.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (243122049991) 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, 21609068 + ... + 21620315.

It is an arithmetic number, because the mean of its divisors is an integer number (15400468050).

Almost surely, 2^243122049992 is an apocalyptic number.

It is an amenable number.

243122049992 is an abundant number, since it is smaller than the sum of its proper divisors (249692927608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243122049992 is a wasteful number, since it uses less digits than its factorization.

243122049992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43229445 (or 43229441 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 243122049992 in words is "two hundred forty-three billion, one hundred twenty-two million, forty-nine thousand, nine hundred ninety-two".