428106630109 has 2 divisors, whose sum is σ = 428106630110. Its totient is φ = 428106630108.

The previous prime is 428106630103. The next prime is 428106630151. The reversal of 428106630109 is 901036601824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 349133265625 + 78973364484 = 590875^2 + 281022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428106630109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428106630103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214053315054 + 214053315055.

It is an arithmetic number, because the mean of its divisors is an integer number (214053315055).

Almost surely, 2^428106630109 is an apocalyptic number.

It is an amenable number.

428106630109 is a deficient number, since it is larger than the sum of its proper divisors (1).

428106630109 is an equidigital number, since it uses as much as digits as its factorization.

428106630109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 428106630109 in words is "four hundred twenty-eight billion, one hundred six million, six hundred thirty thousand, one hundred nine".