22055542320 has 320 divisors, whose sum is σ = 79772037120. Its totient is φ = 4937048064.

The previous prime is 22055542319. The next prime is 22055542351. The reversal of 22055542320 is 2324555022.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18182034 + ... + 18183246.

It is an arithmetic number, because the mean of its divisors is an integer number (249287616).

Almost surely, 2^22055542320 is an apocalyptic number.

22055542320 is a gapful number since it is divisible by the number (20) 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 22055542320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39886018560).

22055542320 is an abundant number, since it is smaller than the sum of its proper divisors (57716494800).

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

22055542320 is a wasteful number, since it uses less digits than its factorization.

22055542320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452 (or 1446 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The spelling of 22055542320 in words is "twenty-two billion, fifty-five million, five hundred forty-two thousand, three hundred twenty".