6655566507166 has 16 divisors (see below), whose sum is σ = 9991420383168. Its totient is φ = 3325093252000.

The previous prime is 6655566507091. The next prime is 6655566507167. The reversal of 6655566507166 is 6617056655566.

It is a junction number, because it is equal to n+sod(n) for n = 6655566507098 and 6655566507107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6655566507167) 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, 119198331 + ... + 119254153.

It is an arithmetic number, because the mean of its divisors is an integer number (624463773948).

Almost surely, 2^{6655566507166} is an apocalyptic number.

6655566507166 is a deficient number, since it is larger than the sum of its proper divisors (3335853876002).

6655566507166 is a wasteful number, since it uses less digits than its factorization.

6655566507166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102947.

The product of its (nonzero) digits is 204120000, while the sum is 64.

The spelling of 6655566507166 in words is "six trillion, six hundred fifty-five billion, five hundred sixty-six million, five hundred seven thousand, one hundred sixty-six".