6509681017 has 12 divisors (see below), whose sum is σ = 7573984896. Its totient is φ = 5578622280.

The previous prime is 6509680999. The next prime is 6509681051. The reversal of 6509681017 is 7101869056.

It is a happy number.

It is not a de Polignac number, because 6509681017 - 2³¹ = 4362197369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6509681117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 324592 + ... + 344062.

It is an arithmetic number, because the mean of its divisors is an integer number (631165408).

Almost surely, 2^6509681017 is an apocalyptic number.

It is an amenable number.

6509681017 is a deficient number, since it is larger than the sum of its proper divisors (1064303879).

6509681017 is a wasteful number, since it uses less digits than its factorization.

6509681017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26308 (or 26301 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 6509681017 is about 80682.5942629512. The cubic root of 6509681017 is about 1867.1816445463.

The spelling of 6509681017 in words is "six billion, five hundred nine million, six hundred eighty-one thousand, seventeen".