2116261166 has 16 divisors (see below), whose sum is σ = 3305132208. Its totient is φ = 1015396800.

The previous prime is 2116261153. The next prime is 2116261171. The reversal of 2116261166 is 6611626112.

It is a super-2 number, since 2×2116261166² = 8957122645439359112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206540 + ... + 216543.

It is an arithmetic number, because the mean of its divisors is an integer number (206570763).

Almost surely, 2^2116261166 is an apocalyptic number.

2116261166 is a deficient number, since it is larger than the sum of its proper divisors (1188871042).

2116261166 is a wasteful number, since it uses less digits than its factorization.

2116261166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423187.

The product of its digits is 5184, while the sum is 32.

The square root of 2116261166 is about 46002.8386732819. The cubic root of 2116261166 is about 1283.8760207897.

Adding to 2116261166 its reverse (6611626112), we get a palindrome (8727887278).

It can be divided in two parts, 21162 and 61166, that added together give a palindrome (82328).

The spelling of 2116261166 in words is "two billion, one hundred sixteen million, two hundred sixty-one thousand, one hundred sixty-six".