6616562645266 has 32 divisors (see below), whose sum is σ = 11710937521152. Its totient is φ = 2743641996480.

The previous prime is 6616562645261. The next prime is 6616562645291. The reversal of 6616562645266 is 6625462656166.

It is not an unprimeable number, because it can be changed into a prime (6616562645261) 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 15 ways as a sum of consecutive naturals, for example, 613560 + ... + 3689116.

It is an arithmetic number, because the mean of its divisors is an integer number (365966797536).

Almost surely, 2^{6616562645266} is an apocalyptic number.

6616562645266 is a deficient number, since it is larger than the sum of its proper divisors (5094374875886).

6616562645266 is a wasteful number, since it uses less digits than its factorization.

6616562645266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080554.

The product of its digits is 111974400, while the sum is 61.

The spelling of 6616562645266 in words is "six trillion, six hundred sixteen billion, five hundred sixty-two million, six hundred forty-five thousand, two hundred sixty-six".