22173879672 has 96 divisors (see below), whose sum is σ = 68693395680. Its totient is φ = 6329859840.

The previous prime is 22173879649. The next prime is 22173879677. The reversal of 22173879672 is 27697837122.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22173879677) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 576598 + ... + 613850.

It is an arithmetic number, because the mean of its divisors is an integer number (715556205).

Almost surely, 2^22173879672 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 22173879672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34346697840).

22173879672 is an abundant number, since it is smaller than the sum of its proper divisors (46519516008).

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

22173879672 is a wasteful number, since it uses less digits than its factorization.

22173879672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38453 (or 38446 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The spelling of 22173879672 in words is "twenty-two billion, one hundred seventy-three million, eight hundred seventy-nine thousand, six hundred seventy-two".