13664424349 has 2 divisors, whose sum is σ = 13664424350. Its totient is φ = 13664424348.

The previous prime is 13664424343. The next prime is 13664424383. The reversal of 13664424349 is 94342446631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8776317124 + 4888107225 = 93682^2 + 69915^2 .

It is a cyclic number.

It is not a de Polignac number, because 13664424349 - 2⁹ = 13664423837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13664424299 and 13664424308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13664424343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6832212174 + 6832212175.

It is an arithmetic number, because the mean of its divisors is an integer number (6832212175).

Almost surely, 2^13664424349 is an apocalyptic number.

It is an amenable number.

13664424349 is a deficient number, since it is larger than the sum of its proper divisors (1).

13664424349 is an equidigital number, since it uses as much as digits as its factorization.

13664424349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 46.

The spelling of 13664424349 in words is "thirteen billion, six hundred sixty-four million, four hundred twenty-four thousand, three hundred forty-nine".