243112063505 has 16 divisors (see below), whose sum is σ = 292317997440. Its totient is φ = 194100820992.

The previous prime is 243112063477. The next prime is 243112063511. The reversal of 243112063505 is 505360211342.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 243112063505 - 2¹⁶ = 243111997969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13720862 + ... + 13738568.

It is an arithmetic number, because the mean of its divisors is an integer number (18269874840).

Almost surely, 2^243112063505 is an apocalyptic number.

It is an amenable number.

243112063505 is a deficient number, since it is larger than the sum of its proper divisors (49205933935).

243112063505 is a wasteful number, since it uses less digits than its factorization.

243112063505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23048.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 243112063505 its reverse (505360211342), we get a palindrome (748472274847).

The spelling of 243112063505 in words is "two hundred forty-three billion, one hundred twelve million, sixty-three thousand, five hundred five".