665054200429 has 2 divisors, whose sum is σ = 665054200430. Its totient is φ = 665054200428.

The previous prime is 665054200417. The next prime is 665054200439. The reversal of 665054200429 is 924002450566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 665015785225 + 38415204 = 815485^2 + 6198^2 .

It is a cyclic number.

It is not a de Polignac number, because 665054200429 - 2⁹ = 665054199917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665054200439) 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, 332527100214 + 332527100215.

It is an arithmetic number, because the mean of its divisors is an integer number (332527100215).

Almost surely, 2^665054200429 is an apocalyptic number.

It is an amenable number.

665054200429 is a deficient number, since it is larger than the sum of its proper divisors (1).

665054200429 is an equidigital number, since it uses as much as digits as its factorization.

665054200429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 665054200429 in words is "six hundred sixty-five billion, fifty-four million, two hundred thousand, four hundred twenty-nine".