243730060655 has 4 divisors (see below), whose sum is σ = 292476072792. Its totient is φ = 194984048520.

The previous prime is 243730060649. The next prime is 243730060687. The reversal of 243730060655 is 556060037342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556060037342 = 2 ⋅278030018671.

It is not a de Polignac number, because 243730060655 - 2³⁶ = 175010583919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24373006061 + ... + 24373006070.

It is an arithmetic number, because the mean of its divisors is an integer number (73119018198).

Almost surely, 2^243730060655 is an apocalyptic number.

243730060655 is a deficient number, since it is larger than the sum of its proper divisors (48746012137).

243730060655 is an equidigital number, since it uses as much as digits as its factorization.

243730060655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48746012136.

The product of its (nonzero) digits is 453600, while the sum is 41.

Adding to 243730060655 its reverse (556060037342), we get a palindrome (799790097997).

The spelling of 243730060655 in words is "two hundred forty-three billion, seven hundred thirty million, sixty thousand, six hundred fifty-five".