20224532105145 has 40 divisors (see below), whose sum is σ = 36255696515016. Its totient is φ = 10786015448064.

The previous prime is 20224532105143. The next prime is 20224532105161. The reversal of 20224532105145 is 54150123542202.

20224532105145 is a `hidden beast` number, since 2 + 0 + 2 + 2 + 4 + 532 + 105 + 14 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2686494736809 + 17538037368336 = 1639053^2 + 4187844^2 .

It is not a de Polignac number, because 20224532105145 - 2¹ = 20224532105143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20224532105143) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10121289 + ... + 11953641.

Almost surely, 2^{20224532105145} is an apocalyptic number.

It is an amenable number.

20224532105145 is a deficient number, since it is larger than the sum of its proper divisors (16031164409871).

20224532105145 is a wasteful number, since it uses less digits than its factorization.

20224532105145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859623 (or 1859614 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 20224532105145 its reverse (54150123542202), we get a palindrome (74374655647347).

The spelling of 20224532105145 in words is "twenty trillion, two hundred twenty-four billion, five hundred thirty-two million, one hundred five thousand, one hundred forty-five".