6779999851 has 2 divisors, whose sum is σ = 6779999852. Its totient is φ = 6779999850.

The previous prime is 6779999761. The next prime is 6779999893. The reversal of 6779999851 is 1589999776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6779999851 - 2²³ = 6771611243 is a prime.

It is not a weakly prime, because it can be changed into another prime (6779999651) 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, 3389999925 + 3389999926.

It is an arithmetic number, because the mean of its divisors is an integer number (3389999926).

Almost surely, 2^6779999851 is an apocalyptic number.

6779999851 is a deficient number, since it is larger than the sum of its proper divisors (1).

6779999851 is an equidigital number, since it uses as much as digits as its factorization.

6779999851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77157360, while the sum is 70.

The square root of 6779999851 is about 82340.7544961789. The cubic root of 6779999851 is about 1892.6772478561.

The spelling of 6779999851 in words is "six billion, seven hundred seventy-nine million, nine hundred ninety-nine thousand, eight hundred fifty-one".