6616450546165 has 8 divisors (see below), whose sum is σ = 7940068929720. Its totient is φ = 5292941587392.

The previous prime is 6616450546163. The next prime is 6616450546201. The reversal of 6616450546165 is 5616450546166.

It can be written as a sum of positive squares in 4 ways, for example, as 1275133291524 + 5341317254641 = 1129218^2 + 2311129^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6616450546165 - 2¹ = 6616450546163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616450546163) 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, 27223110 + ... + 27465079.

It is an arithmetic number, because the mean of its divisors is an integer number (992508616215).

Almost surely, 2^{6616450546165} is an apocalyptic number.

It is an amenable number.

6616450546165 is a deficient number, since it is larger than the sum of its proper divisors (1323618383555).

6616450546165 is a wasteful number, since it uses less digits than its factorization.

6616450546165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54712391.

The product of its (nonzero) digits is 15552000, while the sum is 55.

Subtracting from 6616450546165 its reverse (5616450546166), we obtain a palindrome (999999999999).

The spelling of 6616450546165 in words is "six trillion, six hundred sixteen billion, four hundred fifty million, five hundred forty-six thousand, one hundred sixty-five".