22054656672 has 144 divisors (see below), whose sum is σ = 65143757952. Its totient is φ = 7339921920.

The previous prime is 22054656671. The next prime is 22054656677. The reversal of 22054656672 is 27665645022.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (22054656671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5915673 + ... + 5919399.

It is an arithmetic number, because the mean of its divisors is an integer number (452387208).

Almost surely, 2^22054656672 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 22054656672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32571878976).

22054656672 is an abundant number, since it is smaller than the sum of its proper divisors (43089101280).

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

22054656672 is an equidigital number, since it uses as much as digits as its factorization.

22054656672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513 (or 4493 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 22054656672 in words is "twenty-two billion, fifty-four million, six hundred fifty-six thousand, six hundred seventy-two".