16166421112 has 32 divisors (see below), whose sum is σ = 30830548320. Its totient is φ = 7945620480.

The previous prime is 16166421107. The next prime is 16166421199. The reversal of 16166421112 is 21112466161.

It is a super-2 number, since 2×16166421112² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149188 + ... + 233644.

It is an arithmetic number, because the mean of its divisors is an integer number (963454635).

Almost surely, 2^16166421112 is an apocalyptic number.

It is an amenable number.

16166421112 is a deficient number, since it is larger than the sum of its proper divisors (14664127208).

16166421112 is a wasteful number, since it uses less digits than its factorization.

16166421112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84871 (or 84867 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

Adding to 16166421112 its reverse (21112466161), we get a palindrome (37278887273).

The spelling of 16166421112 in words is "sixteen billion, one hundred sixty-six million, four hundred twenty-one thousand, one hundred twelve".