22138225176 has 64 divisors (see below), whose sum is σ = 57259008000. Its totient is φ = 7125350400.

The previous prime is 22138225171. The next prime is 22138225177. The reversal of 22138225176 is 67152283122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22138225171) 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 15 ways as a sum of consecutive naturals, for example, 300921 + ... + 367191.

It is an arithmetic number, because the mean of its divisors is an integer number (894672000).

Almost surely, 2^22138225176 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22138225176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28629504000).

22138225176 is an abundant number, since it is smaller than the sum of its proper divisors (35120782824).

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

22138225176 is a wasteful number, since it uses less digits than its factorization.

22138225176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66760 (or 66756 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The spelling of 22138225176 in words is "twenty-two billion, one hundred thirty-eight million, two hundred twenty-five thousand, one hundred seventy-six".