7686171139 has 4 divisors (see below), whose sum is σ = 7694288424. Its totient is φ = 7678053856.

The previous prime is 7686171127. The next prime is 7686171151. The reversal of 7686171139 is 9311716867.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9311716867 = 17 ⋅547748051.

It is an interprime number because it is at equal distance from previous prime (7686171127) and next prime (7686171151).

It is a cyclic number.

It is not a de Polignac number, because 7686171139 - 2⁷ = 7686171011 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7686171092 and 7686171101.

It is not an unprimeable number, because it can be changed into a prime (7686171169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4057222 + ... + 4059115.

It is an arithmetic number, because the mean of its divisors is an integer number (1923572106).

Almost surely, 2^7686171139 is an apocalyptic number.

7686171139 is a deficient number, since it is larger than the sum of its proper divisors (8117285).

7686171139 is an equidigital number, since it uses as much as digits as its factorization.

7686171139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8117284.

The product of its digits is 381024, while the sum is 49.

The square root of 7686171139 is about 87670.8112144515. The cubic root of 7686171139 is about 1973.4979672045.

The spelling of 7686171139 in words is "seven billion, six hundred eighty-six million, one hundred seventy-one thousand, one hundred thirty-nine".