6800780517 has 16 divisors (see below), whose sum is σ = 9416917440. Its totient is φ = 4360466432.

The previous prime is 6800780509. The next prime is 6800780537. The reversal of 6800780517 is 7150870086.

It is a cyclic number.

It is not a de Polignac number, because 6800780517 - 2³ = 6800780509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6800780537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129723 + ... + 174440.

It is an arithmetic number, because the mean of its divisors is an integer number (588557340).

Almost surely, 2^6800780517 is an apocalyptic number.

It is an amenable number.

6800780517 is a deficient number, since it is larger than the sum of its proper divisors (2616136923).

6800780517 is a wasteful number, since it uses less digits than its factorization.

6800780517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304452.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 6800780517 is about 82466.8449560185. The cubic root of 6800780517 is about 1894.6089577714.

The spelling of 6800780517 in words is "six billion, eight hundred million, seven hundred eighty thousand, five hundred seventeen".