6566166101 has 4 divisors (see below), whose sum is σ = 7163090304. Its totient is φ = 5969241900.

The previous prime is 6566166023. The next prime is 6566166107. The reversal of 6566166101 is 1016616656.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6566166101 - 2²⁶ = 6499057237 is a prime.

It is a super-2 number, since 2×6566166101² = 86229074531843084402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566166107) 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, 298462085 + ... + 298462106.

It is an arithmetic number, because the mean of its divisors is an integer number (1790772576).

Almost surely, 2^6566166101 is an apocalyptic number.

It is an amenable number.

6566166101 is a deficient number, since it is larger than the sum of its proper divisors (596924203).

6566166101 is a wasteful number, since it uses less digits than its factorization.

6566166101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596924202.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 6566166101 is about 81031.8832374023. The cubic root of 6566166101 is about 1872.5666663490.

It can be divided in two parts, 65 and 66166101, that added together give a palindrome (66166166).

The spelling of 6566166101 in words is "six billion, five hundred sixty-six million, one hundred sixty-six thousand, one hundred one".