428064506869 has 2 divisors, whose sum is σ = 428064506870. Its totient is φ = 428064506868.

The previous prime is 428064506861. The next prime is 428064506893. The reversal of 428064506869 is 968605460824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343782868900 + 84281637969 = 586330^2 + 290313^2 .

It is a cyclic number.

It is not a de Polignac number, because 428064506869 - 2³ = 428064506861 is a prime.

It is a super-2 number, since 2×428064506869² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428064506861) 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, 214032253434 + 214032253435.

It is an arithmetic number, because the mean of its divisors is an integer number (214032253435).

Almost surely, 2^428064506869 is an apocalyptic number.

It is an amenable number.

428064506869 is a deficient number, since it is larger than the sum of its proper divisors (1).

428064506869 is an equidigital number, since it uses as much as digits as its factorization.

428064506869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 428064506869 in words is "four hundred twenty-eight billion, sixty-four million, five hundred six thousand, eight hundred sixty-nine".