6778425833 has 2 divisors, whose sum is σ = 6778425834. Its totient is φ = 6778425832.

The previous prime is 6778425817. The next prime is 6778425839. The reversal of 6778425833 is 3385248776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4772460889 + 2005964944 = 69083^2 + 44788^2 .

It is a cyclic number.

It is not a de Polignac number, because 6778425833 - 2⁴ = 6778425817 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6778425839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3389212916 + 3389212917.

It is an arithmetic number, because the mean of its divisors is an integer number (3389212917).

Almost surely, 2^6778425833 is an apocalyptic number.

It is an amenable number.

6778425833 is a deficient number, since it is larger than the sum of its proper divisors (1).

6778425833 is an equidigital number, since it uses as much as digits as its factorization.

6778425833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6773760, while the sum is 53.

The square root of 6778425833 is about 82331.1959891267. The cubic root of 6778425833 is about 1892.5307710276.

The spelling of 6778425833 in words is "six billion, seven hundred seventy-eight million, four hundred twenty-five thousand, eight hundred thirty-three".