428657607817 has 8 divisors (see below), whose sum is σ = 453933036576. Its totient is φ = 403388876352.

The previous prime is 428657607803. The next prime is 428657607823. The reversal of 428657607817 is 718706756824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428657607817 - 2⁷ = 428657607689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428657607317) 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 in 7 ways as a sum of consecutive naturals, for example, 1542243 + ... + 1798840.

It is an arithmetic number, because the mean of its divisors is an integer number (56741629572).

Almost surely, 2^428657607817 is an apocalyptic number.

It is an amenable number.

428657607817 is a deficient number, since it is larger than the sum of its proper divisors (25275428759).

428657607817 is a wasteful number, since it uses less digits than its factorization.

428657607817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348647.

The product of its (nonzero) digits is 31610880, while the sum is 61.

The spelling of 428657607817 in words is "four hundred twenty-eight billion, six hundred fifty-seven million, six hundred seven thousand, eight hundred seventeen".