243038065824 has 36 divisors (see below), whose sum is σ = 691139500506. Its totient is φ = 81012688512.

The previous prime is 243038065813. The next prime is 243038065871. The reversal of 243038065824 is 428560830342.

243038065824 is a `hidden beast` number, since 2 + 4 + 30 + 38 + 0 + 6 + 582 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 229697815824 + 13340250000 = 479268^2 + 115500^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 243038065824.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 421940799 + ... + 421941374.

Almost surely, 2^243038065824 is an apocalyptic number.

243038065824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

243038065824 is an abundant number, since it is smaller than the sum of its proper divisors (448101434682).

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

243038065824 is a wasteful number, since it uses less digits than its factorization.

243038065824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843882189 (or 843882178 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 243038065824 in words is "two hundred forty-three billion, thirty-eight million, sixty-five thousand, eight hundred twenty-four".