243057789844 has 6 divisors (see below), whose sum is σ = 425351132234. Its totient is φ = 121528894920.

The previous prime is 243057789841. The next prime is 243057789851. The reversal of 243057789844 is 448987750342.

It can be written as a sum of positive squares in only one way, i.e., 182252148100 + 60805641744 = 426910^2 + 246588^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243057789841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30382223727 + ... + 30382223734.

Almost surely, 2^243057789844 is an apocalyptic number.

It is an amenable number.

243057789844 is a deficient number, since it is larger than the sum of its proper divisors (182293342390).

243057789844 is a wasteful number, since it uses less digits than its factorization.

243057789844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60764447465 (or 60764447463 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 61.

The spelling of 243057789844 in words is "two hundred forty-three billion, fifty-seven million, seven hundred eighty-nine thousand, eight hundred forty-four".