428857359305 has 4 divisors (see below), whose sum is σ = 514628831172. Its totient is φ = 343085887440.

The previous prime is 428857359269. The next prime is 428857359319. The reversal of 428857359305 is 503953758824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 153139951561 + 275717407744 = 391331^2 + 525088^2 .

It is not a de Polignac number, because 428857359305 - 2⁶ = 428857359241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42885735926 + ... + 42885735935.

It is an arithmetic number, because the mean of its divisors is an integer number (128657207793).

Almost surely, 2^428857359305 is an apocalyptic number.

It is an amenable number.

428857359305 is a deficient number, since it is larger than the sum of its proper divisors (85771471867).

428857359305 is an equidigital number, since it uses as much as digits as its factorization.

428857359305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85771471866.

The product of its (nonzero) digits is 36288000, while the sum is 59.

The spelling of 428857359305 in words is "four hundred twenty-eight billion, eight hundred fifty-seven million, three hundred fifty-nine thousand, three hundred five".