243539037696 has 40 divisors (see below), whose sum is σ = 648803221704. Its totient is φ = 81179678720.

The previous prime is 243539037683. The next prime is 243539037751. The reversal of 243539037696 is 696730935342.

It is a super-3 number, since 3×243539037696³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79275495 + ... + 79278566.

Almost surely, 2^243539037696 is an apocalyptic number.

It is an amenable number.

243539037696 is an abundant number, since it is smaller than the sum of its proper divisors (405264184008).

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

243539037696 is an equidigital number, since it uses as much as digits as its factorization.

243539037696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158554082 (or 158554066 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 57.

The spelling of 243539037696 in words is "two hundred forty-three billion, five hundred thirty-nine million, thirty-seven thousand, six hundred ninety-six".