6613443430249 has 2 divisors, whose sum is σ = 6613443430250. Its totient is φ = 6613443430248.

The previous prime is 6613443430201. The next prime is 6613443430273. The reversal of 6613443430249 is 9420343443166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4159621435225 + 2453821995024 = 2039515^2 + 1566468^2 .

It is a cyclic number.

It is not a de Polignac number, because 6613443430249 - 2⁹ = 6613443429737 is a prime.

It is not a weakly prime, because it can be changed into another prime (6613443430289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3306721715124 + 3306721715125.

It is an arithmetic number, because the mean of its divisors is an integer number (3306721715125).

Almost surely, 2^{6613443430249} is an apocalyptic number.

It is an amenable number.

6613443430249 is a deficient number, since it is larger than the sum of its proper divisors (1).

6613443430249 is an equidigital number, since it uses as much as digits as its factorization.

6613443430249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4478976, while the sum is 49.

The spelling of 6613443430249 in words is "six trillion, six hundred thirteen billion, four hundred forty-three million, four hundred thirty thousand, two hundred forty-nine".