213425614609 has 2 divisors, whose sum is σ = 213425614610. Its totient is φ = 213425614608.

The previous prime is 213425614603. The next prime is 213425614613. The reversal of 213425614609 is 906416524312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118820158209 + 94605456400 = 344703^2 + 307580^2 .

It is a cyclic number.

It is not a de Polignac number, because 213425614609 - 2⁹ = 213425614097 is a prime.

It is not a weakly prime, because it can be changed into another prime (213425614603) 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, 106712807304 + 106712807305.

It is an arithmetic number, because the mean of its divisors is an integer number (106712807305).

Almost surely, 2^213425614609 is an apocalyptic number.

It is an amenable number.

213425614609 is a deficient number, since it is larger than the sum of its proper divisors (1).

213425614609 is an equidigital number, since it uses as much as digits as its factorization.

213425614609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 213425614609 in words is "two hundred thirteen billion, four hundred twenty-five million, six hundred fourteen thousand, six hundred nine".