508317082021 has 16 divisors (see below), whose sum is σ = 584731686400. Its totient is φ = 432860174208.

The previous prime is 508317081971. The next prime is 508317082057. The reversal of 508317082021 is 120280713805.

It is not a de Polignac number, because 508317082021 - 2³¹ = 506169598373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (508317082321) 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 15 ways as a sum of consecutive naturals, for example, 399745 + ... + 1084633.

It is an arithmetic number, because the mean of its divisors is an integer number (36545730400).

Almost surely, 2^508317082021 is an apocalyptic number.

It is an amenable number.

508317082021 is a deficient number, since it is larger than the sum of its proper divisors (76414604379).

508317082021 is a wasteful number, since it uses less digits than its factorization.

508317082021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685588.

The product of its (nonzero) digits is 26880, while the sum is 37.

Adding to 508317082021 its reverse (120280713805), we get a palindrome (628597795826).

The spelling of 508317082021 in words is "five hundred eight billion, three hundred seventeen million, eighty-two thousand, twenty-one".