243233775340644 has 48 divisors (see below), whose sum is σ = 622348501078080. Its totient is φ = 73325302026240.

The previous prime is 243233775340613. The next prime is 243233775340681. The reversal of 243233775340644 is 446043577332342.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4773757209 + ... + 4773808160.

It is an arithmetic number, because the mean of its divisors is an integer number (12965593772460).

Almost surely, 2^{243233775340644} is an apocalyptic number.

It is an amenable number.

243233775340644 is an abundant number, since it is smaller than the sum of its proper divisors (379114725737436).

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

243233775340644 is a wasteful number, since it uses less digits than its factorization.

243233775340644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9547565580 (or 9547565578 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 57.

The spelling of 243233775340644 in words is "two hundred forty-three trillion, two hundred thirty-three billion, seven hundred seventy-five million, three hundred forty thousand, six hundred forty-four".