7117689681 has 24 divisors (see below), whose sum is σ = 10575392256. Its totient is φ = 4610460960.

The previous prime is 7117689661. The next prime is 7117689707. The reversal of 7117689681 is 1869867117.

It is not a de Polignac number, because 7117689681 - 2¹⁵ = 7117656913 is a prime.

It is a super-2 number, since 2×7117689681² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7117689611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25771 + ... + 122063.

It is an arithmetic number, because the mean of its divisors is an integer number (440641344).

Almost surely, 2^7117689681 is an apocalyptic number.

It is an amenable number.

7117689681 is a deficient number, since it is larger than the sum of its proper divisors (3457702575).

7117689681 is a wasteful number, since it uses less digits than its factorization.

7117689681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96533 (or 96530 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The square root of 7117689681 is about 84366.4013751920. The cubic root of 7117689681 is about 1923.5922405327.

The spelling of 7117689681 in words is "seven billion, one hundred seventeen million, six hundred eighty-nine thousand, six hundred eighty-one".