22002043545 has 12 divisors (see below), whose sum is σ = 38136875556. Its totient is φ = 11734423200.

The previous prime is 22002043523. The next prime is 22002043549. The reversal of 22002043545 is 54534020022.

It is a happy number.

22002043545 is a `hidden beast` number, since 2 + 200 + 20 + 435 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2910818304 + 19091225241 = 53952^2 + 138171^2 .

It is not a de Polignac number, because 22002043545 - 2⁵ = 22002043513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22002043549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244467106 + ... + 244467195.

It is an arithmetic number, because the mean of its divisors is an integer number (3178072963).

Almost surely, 2^22002043545 is an apocalyptic number.

It is an amenable number.

22002043545 is a deficient number, since it is larger than the sum of its proper divisors (16134832011).

22002043545 is a wasteful number, since it uses less digits than its factorization.

22002043545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488934312 (or 488934309 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 22002043545 its reverse (54534020022), we get a palindrome (76536063567).

The spelling of 22002043545 in words is "twenty-two billion, two million, forty-three thousand, five hundred forty-five".