243853663968 has 96 divisors (see below), whose sum is σ = 742163385600. Its totient is φ = 77750437248.

The previous prime is 243853663967. The next prime is 243853663987. The reversal of 243853663968 is 869366358342.

243853663968 is a `hidden beast` number, since 2 + 4 + 3 + 8 + 536 + 6 + 3 + 96 + 8 = 666.

243853663968 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243853663961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6115738 + ... + 6155481.

It is an arithmetic number, because the mean of its divisors is an integer number (7730868600).

Almost surely, 2^243853663968 is an apocalyptic number.

It is an amenable number.

243853663968 is an abundant number, since it is smaller than the sum of its proper divisors (498309721632).

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

243853663968 is a wasteful number, since it uses less digits than its factorization.

243853663968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12271261 (or 12271247 counting only the distinct ones).

The product of its digits is 134369280, while the sum is 63.

The spelling of 243853663968 in words is "two hundred forty-three billion, eight hundred fifty-three million, six hundred sixty-three thousand, nine hundred sixty-eight".