6616885313663 has 4 divisors (see below), whose sum is σ = 6617434490400. Its totient is φ = 6616336136928.

The previous prime is 6616885313651. The next prime is 6616885313693. The reversal of 6616885313663 is 3663135886166.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6616885313663 - 2¹⁴ = 6616885297279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6616885313596 and 6616885313605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616885313693) 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 in 3 ways as a sum of consecutive naturals, for example, 274570295 + ... + 274594392.

It is an arithmetic number, because the mean of its divisors is an integer number (1654358622600).

Almost surely, 2^{6616885313663} is an apocalyptic number.

6616885313663 is a deficient number, since it is larger than the sum of its proper divisors (549176737).

6616885313663 is a wasteful number, since it uses less digits than its factorization.

6616885313663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549176736.

The product of its digits is 67184640, while the sum is 62.

The spelling of 6616885313663 in words is "six trillion, six hundred sixteen billion, eight hundred eighty-five million, three hundred thirteen thousand, six hundred sixty-three".