243989619104 has 96 divisors (see below), whose sum is σ = 599004274176. Its totient is φ = 95041739520.

The previous prime is 243989619091. The next prime is 243989619109. The reversal of 243989619104 is 401916989342.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a self number, because there is not a number n which added to its sum of digits gives 243989619104.

It is not an unprimeable number, because it can be changed into a prime (243989619109) 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 15 ways as a sum of consecutive naturals, for example, 22867979 + ... + 22878645.

It is an arithmetic number, because the mean of its divisors is an integer number (6239627856).

Almost surely, 2^243989619104 is an apocalyptic number.

It is an amenable number.

243989619104 is an abundant number, since it is smaller than the sum of its proper divisors (355014655072).

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

243989619104 is a wasteful number, since it uses less digits than its factorization.

243989619104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19978 (or 19970 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 56.

The spelling of 243989619104 in words is "two hundred forty-three billion, nine hundred eighty-nine million, six hundred nineteen thousand, one hundred four".