213663744011 has 2 divisors, whose sum is σ = 213663744012. Its totient is φ = 213663744010.

The previous prime is 213663743981. The next prime is 213663744013. The reversal of 213663744011 is 110447366312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213663744011 - 2³⁰ = 212590002187 is a prime.

Together with 213663744013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213663744013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106831872005 + 106831872006.

It is an arithmetic number, because the mean of its divisors is an integer number (106831872006).

Almost surely, 2^213663744011 is an apocalyptic number.

213663744011 is a deficient number, since it is larger than the sum of its proper divisors (1).

213663744011 is an equidigital number, since it uses as much as digits as its factorization.

213663744011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 213663744011 in words is "two hundred thirteen billion, six hundred sixty-three million, seven hundred forty-four thousand, eleven".