428106691063 has 2 divisors, whose sum is σ = 428106691064. Its totient is φ = 428106691062.

The previous prime is 428106691043. The next prime is 428106691093. The reversal of 428106691063 is 360196601824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428106691063 - 2⁵ = 428106691031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428106691013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214053345531 + 214053345532.

It is an arithmetic number, because the mean of its divisors is an integer number (214053345532).

Almost surely, 2^428106691063 is an apocalyptic number.

428106691063 is a deficient number, since it is larger than the sum of its proper divisors (1).

428106691063 is an equidigital number, since it uses as much as digits as its factorization.

428106691063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 428106691063 in words is "four hundred twenty-eight billion, one hundred six million, six hundred ninety-one thousand, sixty-three".