6800199979 has 2 divisors, whose sum is σ = 6800199980. Its totient is φ = 6800199978.

The previous prime is 6800199961. The next prime is 6800200003. The reversal of 6800199979 is 9799910086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6800199979 - 2⁵ = 6800199947 is a prime.

It is not a weakly prime, because it can be changed into another prime (6800199479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3400099989 + 3400099990.

It is an arithmetic number, because the mean of its divisors is an integer number (3400099990).

Almost surely, 2^6800199979 is an apocalyptic number.

6800199979 is a deficient number, since it is larger than the sum of its proper divisors (1).

6800199979 is an equidigital number, since it uses as much as digits as its factorization.

6800199979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2204496, while the sum is 58.

The square root of 6800199979 is about 82463.3250542324. The cubic root of 6800199979 is about 1894.5550461265. Note that the first 3 decimals are identical.

The spelling of 6800199979 in words is "six billion, eight hundred million, one hundred ninety-nine thousand, nine hundred seventy-nine".