6808993291 has 2 divisors, whose sum is σ = 6808993292. Its totient is φ = 6808993290.

The previous prime is 6808993277. The next prime is 6808993337. The reversal of 6808993291 is 1923998086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6808993291 - 2¹¹ = 6808991243 is a prime.

It is not a weakly prime, because it can be changed into another prime (6808993211) 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 as a sum of consecutive naturals, namely, 3404496645 + 3404496646.

It is an arithmetic number, because the mean of its divisors is an integer number (3404496646).

Almost surely, 2^6808993291 is an apocalyptic number.

6808993291 is a deficient number, since it is larger than the sum of its proper divisors (1).

6808993291 is an equidigital number, since it uses as much as digits as its factorization.

6808993291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1679616, while the sum is 55.

The square root of 6808993291 is about 82516.6243311007. The cubic root of 6808993291 is about 1895.3713082995.

The spelling of 6808993291 in words is "six billion, eight hundred eight million, nine hundred ninety-three thousand, two hundred ninety-one".