7115167681 has 2 divisors, whose sum is σ = 7115167682. Its totient is φ = 7115167680.

The previous prime is 7115167679. The next prime is 7115167687. The reversal of 7115167681 is 1867615117.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5359557681 + 1755610000 = 73209^2 + 41900^2 .

It is a cyclic number.

It is not a de Polignac number, because 7115167681 - 2¹ = 7115167679 is a prime.

It is a super-2 number, since 2×7115167681² (a number of 21 digits) contains 22 as substring.

Together with 7115167679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7115167687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3557583840 + 3557583841.

It is an arithmetic number, because the mean of its divisors is an integer number (3557583841).

Almost surely, 2^7115167681 is an apocalyptic number.

It is an amenable number.

7115167681 is a deficient number, since it is larger than the sum of its proper divisors (1).

7115167681 is an equidigital number, since it uses as much as digits as its factorization.

7115167681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 43.

The square root of 7115167681 is about 84351.4533425477. The cubic root of 7115167681 is about 1923.3650192036.

The spelling of 7115167681 in words is "seven billion, one hundred fifteen million, one hundred sixty-seven thousand, six hundred eighty-one".