317928016578420 has 108 divisors (see below), whose sum is σ = 1008134315253156. Its totient is φ = 81094682465280.

The previous prime is 317928016578377. The next prime is 317928016578439. The reversal of 317928016578420 is 24875610829713.

317928016578420 is a `hidden beast` number, since 3 + 1 + 7 + 9 + 2 + 8 + 0 + 16 + 578 + 42 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 125816108701284 + 192111907877136 = 11216778^2 + 13860444^2 .

It is a congruent number.

It is an unprimeable number.

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 in 35 ways as a sum of consecutive naturals, for example, 1669344061 + ... + 1669534500.

It is a 1-persistent number, because it is pandigital, but 2⋅317928016578420 = 635856033156840 is not.

Almost surely, 2^{317928016578420} is an apocalyptic number.

317928016578420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

317928016578420 is an abundant number, since it is smaller than the sum of its proper divisors (690206298674736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

317928016578420 is a wasteful number, since it uses less digits than its factorization.

317928016578420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338878622 (or 3338878594 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 63.

The spelling of 317928016578420 in words is "three hundred seventeen trillion, nine hundred twenty-eight billion, sixteen million, five hundred seventy-eight thousand, four hundred twenty".