2166771112 has 64 divisors (see below), whose sum is σ = 4486104000. Its totient is φ = 972963840.

The previous prime is 2166771109. The next prime is 2166771119. The reversal of 2166771112 is 2111776612.

It is not an unprimeable number, because it can be changed into a prime (2166771119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3369463 + ... + 3370105.

It is an arithmetic number, because the mean of its divisors is an integer number (70095375).

Almost surely, 2^2166771112 is an apocalyptic number.

2166771112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2166771112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2243052000).

2166771112 is an abundant number, since it is smaller than the sum of its proper divisors (2319332888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2166771112 is a wasteful number, since it uses less digits than its factorization.

2166771112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066 (or 1062 counting only the distinct ones).

The product of its digits is 7056, while the sum is 34.

The square root of 2166771112 is about 46548.5887218936. The cubic root of 2166771112 is about 1294.0101382597.

The spelling of 2166771112 in words is "two billion, one hundred sixty-six million, seven hundred seventy-one thousand, one hundred twelve".