667441457413 has 2 divisors, whose sum is σ = 667441457414. Its totient is φ = 667441457412.

The previous prime is 667441457357. The next prime is 667441457429. The reversal of 667441457413 is 314754144766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395310215169 + 272131242244 = 628737^2 + 521662^2 .

It is a cyclic number.

It is not a de Polignac number, because 667441457413 - 2⁹ = 667441456901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667441457443) 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, 333720728706 + 333720728707.

It is an arithmetic number, because the mean of its divisors is an integer number (333720728707).

Almost surely, 2^667441457413 is an apocalyptic number.

It is an amenable number.

667441457413 is a deficient number, since it is larger than the sum of its proper divisors (1).

667441457413 is an equidigital number, since it uses as much as digits as its factorization.

667441457413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 52.

The spelling of 667441457413 in words is "six hundred sixty-seven billion, four hundred forty-one million, four hundred fifty-seven thousand, four hundred thirteen".