2166110266 has 8 divisors (see below), whose sum is σ = 3249369684. Its totient is φ = 1082987040.

The previous prime is 2166110249. The next prime is 2166110279. The reversal of 2166110266 is 6620116612.

It can be written as a sum of positive squares in 2 ways, for example, as 2154352225 + 11758041 = 46415^2 + 3429^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29256 + ... + 72028.

Almost surely, 2^2166110266 is an apocalyptic number.

2166110266 is a deficient number, since it is larger than the sum of its proper divisors (1083259418).

2166110266 is a wasteful number, since it uses less digits than its factorization.

2166110266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68096.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 2166110266 is about 46541.4897269093. The cubic root of 2166110266 is about 1293.8785710057.

Adding to 2166110266 its reverse (6620116612), we get a palindrome (8786226878).

The spelling of 2166110266 in words is "two billion, one hundred sixty-six million, one hundred ten thousand, two hundred sixty-six".