6881318771 has 2 divisors, whose sum is σ = 6881318772. Its totient is φ = 6881318770.

The previous prime is 6881318753. The next prime is 6881318791. The reversal of 6881318771 is 1778131886.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6881318771 - 2⁶ = 6881318707 is a prime.

It is not a weakly prime, because it can be changed into another prime (6881318791) 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 as a sum of consecutive naturals, namely, 3440659385 + 3440659386.

It is an arithmetic number, because the mean of its divisors is an integer number (3440659386).

Almost surely, 2^6881318771 is an apocalyptic number.

6881318771 is a deficient number, since it is larger than the sum of its proper divisors (1).

6881318771 is an equidigital number, since it uses as much as digits as its factorization.

6881318771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 50.

The square root of 6881318771 is about 82953.7146305095. The cubic root of 6881318771 is about 1902.0585971090.

The spelling of 6881318771 in words is "six billion, eight hundred eighty-one million, three hundred eighteen thousand, seven hundred seventy-one".