6616509017 has 2 divisors, whose sum is σ = 6616509018. Its totient is φ = 6616509016.

The previous prime is 6616508993. The next prime is 6616509043. The reversal of 6616509017 is 7109056166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5807049616 + 809459401 = 76204^2 + 28451^2 .

It is a cyclic number.

It is not a de Polignac number, because 6616509017 - 2¹⁰ = 6616507993 is a prime.

It is not a weakly prime, because it can be changed into another prime (6616509077) 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 as a sum of consecutive naturals, namely, 3308254508 + 3308254509.

It is an arithmetic number, because the mean of its divisors is an integer number (3308254509).

Almost surely, 2^6616509017 is an apocalyptic number.

It is an amenable number.

6616509017 is a deficient number, since it is larger than the sum of its proper divisors (1).

6616509017 is an equidigital number, since it uses as much as digits as its factorization.

6616509017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 6616509017 is about 81341.9265631200. The cubic root of 6616509017 is about 1877.3401552448.

The spelling of 6616509017 in words is "six billion, six hundred sixteen million, five hundred nine thousand, seventeen".