428193538585 has 8 divisors (see below), whose sum is σ = 513836744256. Its totient is φ = 342551832240.

The previous prime is 428193538561. The next prime is 428193538601. The reversal of 428193538585 is 585835391824.

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

It is not a de Polignac number, because 428193538585 - 2¹⁷ = 428193407513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398532 + ... + 1007578.

It is an arithmetic number, because the mean of its divisors is an integer number (64229593032).

Almost surely, 2^428193538585 is an apocalyptic number.

It is an amenable number.

428193538585 is a deficient number, since it is larger than the sum of its proper divisors (85643205671).

428193538585 is a wasteful number, since it uses less digits than its factorization.

428193538585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749663.

The product of its digits is 41472000, while the sum is 61.

The spelling of 428193538585 in words is "four hundred twenty-eight billion, one hundred ninety-three million, five hundred thirty-eight thousand, five hundred eighty-five".