243727144643 has 2 divisors, whose sum is σ = 243727144644. Its totient is φ = 243727144642.

The previous prime is 243727144631. The next prime is 243727144669. The reversal of 243727144643 is 346441727342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243727144643 - 2¹⁴ = 243727128259 is a prime.

It is not a weakly prime, because it can be changed into another prime (243727144693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121863572321 + 121863572322.

It is an arithmetic number, because the mean of its divisors is an integer number (121863572322).

Almost surely, 2^243727144643 is an apocalyptic number.

243727144643 is a deficient number, since it is larger than the sum of its proper divisors (1).

243727144643 is an equidigital number, since it uses as much as digits as its factorization.

243727144643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 47.

The spelling of 243727144643 in words is "two hundred forty-three billion, seven hundred twenty-seven million, one hundred forty-four thousand, six hundred forty-three".