243355503450 has 48 divisors (see below), whose sum is σ = 613750851360. Its totient is φ = 63794886720.

The previous prime is 243355503439. The next prime is 243355503451. The reversal of 243355503450 is 54305553342.

243355503450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 243355503399 and 243355503408.

It is not an unprimeable number, because it can be changed into a prime (243355503451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13740049 + ... + 13757748.

It is an arithmetic number, because the mean of its divisors is an integer number (12786476070).

Almost surely, 2^243355503450 is an apocalyptic number.

243355503450 is an abundant number, since it is smaller than the sum of its proper divisors (370395347910).

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

243355503450 is a wasteful number, since it uses less digits than its factorization.

243355503450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27497871 (or 27497866 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 39.

The spelling of 243355503450 in words is "two hundred forty-three billion, three hundred fifty-five million, five hundred three thousand, four hundred fifty".