428529375809 has 2 divisors, whose sum is σ = 428529375810. Its totient is φ = 428529375808.

The previous prime is 428529375751. The next prime is 428529375817. The reversal of 428529375809 is 908573925824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310725975184 + 117803400625 = 557428^2 + 343225^2 .

It is a cyclic number.

It is not a de Polignac number, because 428529375809 - 2⁸ = 428529375553 is a prime.

It is not a weakly prime, because it can be changed into another prime (428529374809) 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, 214264687904 + 214264687905.

It is an arithmetic number, because the mean of its divisors is an integer number (214264687905).

Almost surely, 2^428529375809 is an apocalyptic number.

It is an amenable number.

428529375809 is a deficient number, since it is larger than the sum of its proper divisors (1).

428529375809 is an equidigital number, since it uses as much as digits as its factorization.

428529375809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43545600, while the sum is 62.

The spelling of 428529375809 in words is "four hundred twenty-eight billion, five hundred twenty-nine million, three hundred seventy-five thousand, eight hundred nine".