243136324663 has 4 divisors (see below), whose sum is σ = 243138835080. Its totient is φ = 243133814248.

The previous prime is 243136324637. The next prime is 243136324681. The reversal of 243136324663 is 366423631342.

243136324663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366423631342 = 2 ⋅183211815671.

It is a cyclic number.

It is not a de Polignac number, because 243136324663 - 2²⁵ = 243102770231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243136321663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103848 + ... + 1305661.

It is an arithmetic number, because the mean of its divisors is an integer number (60784708770).

Almost surely, 2^243136324663 is an apocalyptic number.

243136324663 is a deficient number, since it is larger than the sum of its proper divisors (2510417).

243136324663 is a wasteful number, since it uses less digits than its factorization.

243136324663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510416.

The product of its digits is 1119744, while the sum is 43.

The spelling of 243136324663 in words is "two hundred forty-three billion, one hundred thirty-six million, three hundred twenty-four thousand, six hundred sixty-three".