243345230555 has 24 divisors (see below), whose sum is σ = 339780838608. Its totient is φ = 166820716608.

The previous prime is 243345230539. The next prime is 243345230561. The reversal of 243345230555 is 555032543342.

It is a happy number.

It is not a de Polignac number, because 243345230555 - 2⁴ = 243345230539 is a prime.

It is a super-2 number, since 2×243345230555² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 799472 + ... + 1061058.

It is an arithmetic number, because the mean of its divisors is an integer number (14157534942).

Almost surely, 2^243345230555 is an apocalyptic number.

243345230555 is a deficient number, since it is larger than the sum of its proper divisors (96435608053).

243345230555 is a wasteful number, since it uses less digits than its factorization.

243345230555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265403 (or 265396 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 41.

Adding to 243345230555 its reverse (555032543342), we get a palindrome (798377773897).

The spelling of 243345230555 in words is "two hundred forty-three billion, three hundred forty-five million, two hundred thirty thousand, five hundred fifty-five".