6616205052517 has 8 divisors (see below), whose sum is σ = 7009769250072. Its totient is φ = 6223127040000.

The previous prime is 6616205052481. The next prime is 6616205052521. The reversal of 6616205052517 is 7152505026166.

It can be written as a sum of positive squares in 4 ways, for example, as 4601170861156 + 2015034191361 = 2145034^2 + 1419519^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6616205052517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616205059517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121518234 + ... + 121572667.

It is an arithmetic number, because the mean of its divisors is an integer number (876221156259).

Almost surely, 2^{6616205052517} is an apocalyptic number.

It is an amenable number.

6616205052517 is a deficient number, since it is larger than the sum of its proper divisors (393564197555).

6616205052517 is a wasteful number, since it uses less digits than its factorization.

6616205052517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243092519.

The product of its (nonzero) digits is 756000, while the sum is 46.

The spelling of 6616205052517 in words is "six trillion, six hundred sixteen billion, two hundred five million, fifty-two thousand, five hundred seventeen".