7817266808168 has 32 divisors (see below), whose sum is σ = 14903676806760. Its totient is φ = 3843004750080.

The previous prime is 7817266808167. The next prime is 7817266808171. The reversal of 7817266808168 is 8618086627187.

It can be written as a sum of positive squares in 4 ways, for example, as 6997622671204 + 819644136964 = 2645302^2 + 905342^2 .

It is a super-2 number, since 2×7817266808168² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7817266808098 and 7817266808107.

It is not an unprimeable number, because it can be changed into a prime (7817266808161) 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, 2024771 + ... + 4442322.

Almost surely, 2^{7817266808168} is an apocalyptic number.

It is an amenable number.

7817266808168 is a deficient number, since it is larger than the sum of its proper divisors (7086409998592).

7817266808168 is a wasteful number, since it uses less digits than its factorization.

7817266808168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6469637 (or 6469633 counting only the distinct ones).

The product of its (nonzero) digits is 86704128, while the sum is 68.

The spelling of 7817266808168 in words is "seven trillion, eight hundred seventeen billion, two hundred sixty-six million, eight hundred eight thousand, one hundred sixty-eight".