22281405445 has 16 divisors (see below), whose sum is σ = 28799714160. Its totient is φ = 16450942464.

The previous prime is 22281405437. The next prime is 22281405449. The reversal of 22281405445 is 54450418222.

It can be written as a sum of positive squares in 8 ways, for example, as 49999041 + 22231406404 = 7071^2 + 149102^2 .

It is a cyclic number.

It is not a de Polignac number, because 22281405445 - 2³ = 22281405437 is a prime.

It is a super-2 number, since 2×22281405445² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22281405449) 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 15 ways as a sum of consecutive naturals, for example, 363457 + ... + 420313.

It is an arithmetic number, because the mean of its divisors is an integer number (1799982135).

Almost surely, 2^22281405445 is an apocalyptic number.

It is an amenable number.

22281405445 is a deficient number, since it is larger than the sum of its proper divisors (6518308715).

22281405445 is a wasteful number, since it uses less digits than its factorization.

22281405445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62904.

The product of its (nonzero) digits is 102400, while the sum is 37.

The spelling of 22281405445 in words is "twenty-two billion, two hundred eighty-one million, four hundred five thousand, four hundred forty-five".