6605640456317 has 16 divisors (see below), whose sum is σ = 7656745247232. Its totient is φ = 5581477756800.

The previous prime is 6605640456251. The next prime is 6605640456319. The reversal of 6605640456317 is 7136540465066.

It is a cyclic number.

It is not a de Polignac number, because 6605640456317 - 2²² = 6605636262013 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6605640456319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2428613 + ... + 4371434.

It is an arithmetic number, because the mean of its divisors is an integer number (478546577952).

Almost surely, 2^{6605640456317} is an apocalyptic number.

It is an amenable number.

6605640456317 is a deficient number, since it is larger than the sum of its proper divisors (1051104790915).

6605640456317 is a wasteful number, since it uses less digits than its factorization.

6605640456317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6802028.

The product of its (nonzero) digits is 10886400, while the sum is 53.

The spelling of 6605640456317 in words is "six trillion, six hundred five billion, six hundred forty million, four hundred fifty-six thousand, three hundred seventeen".