243313997064 has 32 divisors (see below), whose sum is σ = 622431157920. Its totient is φ = 79218510336.

The previous prime is 243313997057. The next prime is 243313997081. The reversal of 243313997064 is 460799313342.

It is a junction number, because it is equal to n+sod(n) for n = 243313996998 and 243313997016.

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, 117883657 + ... + 117885720.

It is an arithmetic number, because the mean of its divisors is an integer number (19450973685).

Almost surely, 2^243313997064 is an apocalyptic number.

243313997064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

243313997064 is an abundant number, since it is smaller than the sum of its proper divisors (379117160856).

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

243313997064 is a wasteful number, since it uses less digits than its factorization.

243313997064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235769429 (or 235769425 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 51.

The spelling of 243313997064 in words is "two hundred forty-three billion, three hundred thirteen million, nine hundred ninety-seven thousand, sixty-four".