243155205344 has 24 divisors (see below), whose sum is σ = 478794163680. Its totient is φ = 121556687616.

The previous prime is 243155205343. The next prime is 243155205361. The reversal of 243155205344 is 443502551342.

It is a junction number, because it is equal to n+sod(n) for n = 243155205298 and 243155205307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243155205343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463829 + ... + 837524.

It is an arithmetic number, because the mean of its divisors is an integer number (19949756820).

Almost surely, 2^243155205344 is an apocalyptic number.

It is an amenable number.

243155205344 is a deficient number, since it is larger than the sum of its proper divisors (235638958336).

243155205344 is a wasteful number, since it uses less digits than its factorization.

243155205344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307202 (or 1307194 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 243155205344 its reverse (443502551342), we get a palindrome (686657756686).

The spelling of 243155205344 in words is "two hundred forty-three billion, one hundred fifty-five million, two hundred five thousand, three hundred forty-four".