817531853168 has 20 divisors (see below), whose sum is σ = 1667334701160. Its totient is φ = 387251930304.

The previous prime is 817531853161. The next prime is 817531853213. The reversal of 817531853168 is 861358135718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (817531853161) 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 3 ways as a sum of consecutive naturals, for example, 1344624455 + ... + 1344625062.

It is an arithmetic number, because the mean of its divisors is an integer number (83366735058).

Almost surely, 2^817531853168 is an apocalyptic number.

It is an amenable number.

817531853168 is an abundant number, since it is smaller than the sum of its proper divisors (849802847992).

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

817531853168 is a wasteful number, since it uses less digits than its factorization.

817531853168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689249544 (or 2689249538 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 56.

The spelling of 817531853168 in words is "eight hundred seventeen billion, five hundred thirty-one million, eight hundred fifty-three thousand, one hundred sixty-eight".