243337620541552 has 20 divisors (see below), whose sum is σ = 473525446093720. Its totient is φ = 121137505420608.

The previous prime is 243337620541537. The next prime is 243337620541559. The reversal of 243337620541552 is 255145026733342.

It is a self number, because there is not a number n which added to its sum of digits gives 243337620541552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243337620541559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33206549358 + ... + 33206556685.

It is an arithmetic number, because the mean of its divisors is an integer number (23676272304686).

Almost surely, 2^{243337620541552} is an apocalyptic number.

It is an amenable number.

243337620541552 is a deficient number, since it is larger than the sum of its proper divisors (230187825552168).

243337620541552 is a wasteful number, since it uses less digits than its factorization.

243337620541552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66413106280 (or 66413106274 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 52.

The spelling of 243337620541552 in words is "two hundred forty-three trillion, three hundred thirty-seven billion, six hundred twenty million, five hundred forty-one thousand, five hundred fifty-two".