6611165566 has 8 divisors (see below), whose sum is σ = 9934553880. Its totient is φ = 3299647608.

The previous prime is 6611165531. The next prime is 6611165567. The reversal of 6611165566 is 6655611166.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6611165567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2966196 + ... + 2968423.

It is an arithmetic number, because the mean of its divisors is an integer number (1241819235).

Almost surely, 2^6611165566 is an apocalyptic number.

6611165566 is a deficient number, since it is larger than the sum of its proper divisors (3323388314).

6611165566 is a wasteful number, since it uses less digits than its factorization.

6611165566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5935178.

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

The square root of 6611165566 is about 81309.0743152325. The cubic root of 6611165566 is about 1876.8346431100.

The spelling of 6611165566 in words is "six billion, six hundred eleven million, one hundred sixty-five thousand, five hundred sixty-six".