6808720385387 has 2 divisors, whose sum is σ = 6808720385388. Its totient is φ = 6808720385386.

The previous prime is 6808720385371. The next prime is 6808720385473. The reversal of 6808720385387 is 7835830278086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6808720385387 - 2⁴ = 6808720385371 is a prime.

It is not a weakly prime, because it can be changed into another prime (6808720385317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3404360192693 + 3404360192694.

It is an arithmetic number, because the mean of its divisors is an integer number (3404360192694).

Almost surely, 2^{6808720385387} is an apocalyptic number.

6808720385387 is a deficient number, since it is larger than the sum of its proper divisors (1).

6808720385387 is an equidigital number, since it uses as much as digits as its factorization.

6808720385387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108380160, while the sum is 65.

The spelling of 6808720385387 in words is "six trillion, eight hundred eight billion, seven hundred twenty million, three hundred eighty-five thousand, three hundred eighty-seven".