213443123661727 has 2 divisors, whose sum is σ = 213443123661728. Its totient is φ = 213443123661726.

The previous prime is 213443123661689. The next prime is 213443123661731. The reversal of 213443123661727 is 727166321344312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213443123661727 - 2¹¹ = 213443123659679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213443123691727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106721561830863 + 106721561830864.

It is an arithmetic number, because the mean of its divisors is an integer number (106721561830864).

Almost surely, 2^{213443123661727} is an apocalyptic number.

213443123661727 is a deficient number, since it is larger than the sum of its proper divisors (1).

213443123661727 is an equidigital number, since it uses as much as digits as its factorization.

213443123661727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 52.

The spelling of 213443123661727 in words is "two hundred thirteen trillion, four hundred forty-three billion, one hundred twenty-three million, six hundred sixty-one thousand, seven hundred twenty-seven".