6775891091 has 2 divisors, whose sum is σ = 6775891092. Its totient is φ = 6775891090.

The previous prime is 6775891081. The next prime is 6775891099. The reversal of 6775891091 is 1901985776.

6775891091 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6775891091 - 2¹⁸ = 6775628947 is a prime.

It is not a weakly prime, because it can be changed into another prime (6775891099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3387945545 + 3387945546.

It is an arithmetic number, because the mean of its divisors is an integer number (3387945546).

Almost surely, 2^6775891091 is an apocalyptic number.

6775891091 is a deficient number, since it is larger than the sum of its proper divisors (1).

6775891091 is an equidigital number, since it uses as much as digits as its factorization.

6775891091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560, while the sum is 53.

The square root of 6775891091 is about 82315.8009801277. The cubic root of 6775891091 is about 1892.2948423417.

The spelling of 6775891091 in words is "six billion, seven hundred seventy-five million, eight hundred ninety-one thousand, ninety-one".