22005045450 has 72 divisors (see below), whose sum is σ = 60089481036. Its totient is φ = 5771808000.

The previous prime is 22005045443. The next prime is 22005045451. The reversal of 22005045450 is 5454050022.

22005045450 is a `hidden beast` number, since 2 + 200 + 5 + 0 + 4 + 5 + 450 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 3293267769 + 18711777681 = 57387^2 + 136791^2 .

It is not an unprimeable number, because it can be changed into a prime (22005045451) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 373371 + ... + 428270.

Almost surely, 2^22005045450 is an apocalyptic number.

22005045450 is an abundant number, since it is smaller than the sum of its proper divisors (38084435586).

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

22005045450 is a wasteful number, since it uses less digits than its factorization.

22005045450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801720 (or 801712 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

Adding to 22005045450 its reverse (5454050022), we get a palindrome (27459095472).

The spelling of 22005045450 in words is "twenty-two billion, five million, forty-five thousand, four hundred fifty".