26166163 has 4 divisors (see below), whose sum is σ = 26218080. Its totient is φ = 26114248.

The previous prime is 26166137. The next prime is 26166181. The reversal of 26166163 is 36166162.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26166163 is a prime.

It is a super-2 number, since 2×26166163² = 1369336172285138, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26166103) 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 3 ways as a sum of consecutive naturals, for example, 25195 + ... + 26212.

It is an arithmetic number, because the mean of its divisors is an integer number (6554520).

Almost surely, 2^26166163 is an apocalyptic number.

26166163 is a deficient number, since it is larger than the sum of its proper divisors (51917).

26166163 is an equidigital number, since it uses as much as digits as its factorization.

26166163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51916.

The product of its digits is 7776, while the sum is 31.

The square root of 26166163 is about 5115.2871864637. The cubic root of 26166163 is about 296.8793661851.

Subtracting 26166163 from its reverse (36166162), we obtain a palindrome (9999999).

The spelling of 26166163 in words is "twenty-six million, one hundred sixty-six thousand, one hundred sixty-three".