213242889439 has 2 divisors, whose sum is σ = 213242889440. Its totient is φ = 213242889438.

The previous prime is 213242889359. The next prime is 213242889467. The reversal of 213242889439 is 934988242312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213242889439 - 2¹¹ = 213242887391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213242889439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213242880439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106621444719 + 106621444720.

It is an arithmetic number, because the mean of its divisors is an integer number (106621444720).

Almost surely, 2^213242889439 is an apocalyptic number.

213242889439 is a deficient number, since it is larger than the sum of its proper divisors (1).

213242889439 is an equidigital number, since it uses as much as digits as its factorization.

213242889439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5971968, while the sum is 55.

The spelling of 213242889439 in words is "two hundred thirteen billion, two hundred forty-two million, eight hundred eighty-nine thousand, four hundred thirty-nine".