22155798528 has 72 divisors (see below), whose sum is σ = 63990067050. Its totient is φ = 7385260032.

The previous prime is 22155798527. The next prime is 22155798541. The reversal of 22155798528 is 82589755122.

22155798528 is a `hidden beast` number, since 2 + 2 + 1 + 557 + 9 + 85 + 2 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19296543744 + 2859254784 = 138912^2 + 53472^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (22155798527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 582583 + ... + 619446.

Almost surely, 2^22155798528 is an apocalyptic number.

It is an amenable number.

22155798528 is an abundant number, since it is smaller than the sum of its proper divisors (41834268522).

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

22155798528 is a wasteful number, since it uses less digits than its factorization.

22155798528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202057 (or 1202034 counting only the distinct ones).

The product of its digits is 4032000, while the sum is 54.

The spelling of 22155798528 in words is "twenty-two billion, one hundred fifty-five million, seven hundred ninety-eight thousand, five hundred twenty-eight".