243115516988 has 24 divisors (see below), whose sum is σ = 452412166752. Its totient is φ = 113916276224.

The previous prime is 243115516979. The next prime is 243115517041. The reversal of 243115516988 is 889615511342.

It is a congruent number.

It is an unprimeable number.

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, 7656320 + ... + 7688007.

It is an arithmetic number, because the mean of its divisors is an integer number (18850506948).

Almost surely, 2^243115516988 is an apocalyptic number.

It is an amenable number.

243115516988 is a deficient number, since it is larger than the sum of its proper divisors (209296649764).

243115516988 is a wasteful number, since it uses less digits than its factorization.

243115516988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15344581 (or 15344579 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 53.

The spelling of 243115516988 in words is "two hundred forty-three billion, one hundred fifteen million, five hundred sixteen thousand, nine hundred eighty-eight".