213395395867439 has 2 divisors, whose sum is σ = 213395395867440. Its totient is φ = 213395395867438.

The previous prime is 213395395867429. The next prime is 213395395867441. The reversal of 213395395867439 is 934768593593312.

213395395867439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213395395867439 is a prime.

Together with 213395395867441, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213395395867439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213395395867429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106697697933719 + 106697697933720.

It is an arithmetic number, because the mean of its divisors is an integer number (106697697933720).

Almost surely, 2^{213395395867439} is an apocalyptic number.

213395395867439 is a deficient number, since it is larger than the sum of its proper divisors (1).

213395395867439 is an equidigital number, since it uses as much as digits as its factorization.

213395395867439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3968092800, while the sum is 77.

The spelling of 213395395867439 in words is "two hundred thirteen trillion, three hundred ninety-five billion, three hundred ninety-five million, eight hundred sixty-seven thousand, four hundred thirty-nine".