6782065991 has 2 divisors, whose sum is σ = 6782065992. Its totient is φ = 6782065990.

The previous prime is 6782065943. The next prime is 6782065993. The reversal of 6782065991 is 1995602876.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6782065991 - 2²⁶ = 6714957127 is a prime.

It is a Sophie Germain prime.

Together with 6782065993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6782065993) 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, 3391032995 + 3391032996.

It is an arithmetic number, because the mean of its divisors is an integer number (3391032996).

Almost surely, 2^6782065991 is an apocalyptic number.

6782065991 is a deficient number, since it is larger than the sum of its proper divisors (1).

6782065991 is an equidigital number, since it uses as much as digits as its factorization.

6782065991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The square root of 6782065991 is about 82353.2998185258. The cubic root of 6782065991 is about 1892.8694867494.

The spelling of 6782065991 in words is "six billion, seven hundred eighty-two million, sixty-five thousand, nine hundred ninety-one".