6611565616 has 60 divisors (see below), whose sum is σ = 13166339592. Its totient is φ = 3215676672.

The previous prime is 6611565607. The next prime is 6611565619. The reversal of 6611565616 is 6165651166.

It is not an unprimeable number, because it can be changed into a prime (6611565619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7289035 + ... + 7289941.

Almost surely, 2^6611565616 is an apocalyptic number.

It is an amenable number.

6611565616 is a deficient number, since it is larger than the sum of its proper divisors (6554773976).

6611565616 is an equidigital number, since it uses as much as digits as its factorization.

6611565616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1061 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The square root of 6611565616 is about 81311.5343355418. The cubic root of 6611565616 is about 1876.8724988934.

The spelling of 6611565616 in words is "six billion, six hundred eleven million, five hundred sixty-five thousand, six hundred sixteen".