6775425728657 has 2 divisors, whose sum is σ = 6775425728658. Its totient is φ = 6775425728656.

The previous prime is 6775425728627. The next prime is 6775425728677. The reversal of 6775425728657 is 7568275245776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5685153534736 + 1090272193921 = 2384356^2 + 1044161^2 .

It is a cyclic number.

It is not a de Polignac number, because 6775425728657 - 2¹⁴ = 6775425712273 is a prime.

It is not a weakly prime, because it can be changed into another prime (6775425728627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3387712864328 + 3387712864329.

It is an arithmetic number, because the mean of its divisors is an integer number (3387712864329).

Almost surely, 2^{6775425728657} is an apocalyptic number.

It is an amenable number.

6775425728657 is a deficient number, since it is larger than the sum of its proper divisors (1).

6775425728657 is an equidigital number, since it uses as much as digits as its factorization.

6775425728657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1382976000, while the sum is 71.

The spelling of 6775425728657 in words is "six trillion, seven hundred seventy-five billion, four hundred twenty-five million, seven hundred twenty-eight thousand, six hundred fifty-seven".