243886342656 has 160 divisors (see below), whose sum is σ = 731660599296. Its totient is φ = 71520768000.

The previous prime is 243886342639. The next prime is 243886342669. The reversal of 243886342656 is 656243688342.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 243886342596 and 243886342605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290961 + ... + 756591.

Almost surely, 2^243886342656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243886342656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365830299648).

243886342656 is an abundant number, since it is smaller than the sum of its proper divisors (487774256640).

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

243886342656 is a wasteful number, since it uses less digits than its factorization.

243886342656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465694 (or 465678 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 57.

The spelling of 243886342656 in words is "two hundred forty-three billion, eight hundred eighty-six million, three hundred forty-two thousand, six hundred fifty-six".