6616616611 has 8 divisors (see below), whose sum is σ = 7221783744. Its totient is φ = 6012058920.

The previous prime is 6616616599. The next prime is 6616616621. The reversal of 6616616611 is 1166166166.

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 6616616611 - 2⁷ = 6616616483 is a prime.

It is a super-2 number, since 2×6616616611² = 87559230753922250642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6616616621) 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, 129505 + ... + 173218.

It is an arithmetic number, because the mean of its divisors is an integer number (902722968).

Almost surely, 2^6616616611 is an apocalyptic number.

6616616611 is a deficient number, since it is larger than the sum of its proper divisors (605167133).

6616616611 is a wasteful number, since it uses less digits than its factorization.

6616616611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304721.

The product of its digits is 46656, while the sum is 40.

The square root of 6616616611 is about 81342.5879290793. The cubic root of 6616616611 is about 1877.3503312778.

The spelling of 6616616611 in words is "six billion, six hundred sixteen million, six hundred sixteen thousand, six hundred eleven".