22145143345 has 16 divisors (see below), whose sum is σ = 28901697552. Its totient is φ = 16191417600.

The previous prime is 22145143343. The next prime is 22145143373. The reversal of 22145143345 is 54334154122.

It can be written as a sum of positive squares in 8 ways, for example, as 283450896 + 21861692449 = 16836^2 + 147857^2 .

It is not a de Polignac number, because 22145143345 - 2¹ = 22145143343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22145143345.

It is not an unprimeable number, because it can be changed into a prime (22145143343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1680042 + ... + 1693171.

It is an arithmetic number, because the mean of its divisors is an integer number (1806356097).

Almost surely, 2^22145143345 is an apocalyptic number.

It is an amenable number.

22145143345 is a deficient number, since it is larger than the sum of its proper divisors (6756554207).

22145143345 is a wasteful number, since it uses less digits than its factorization.

22145143345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3373332.

The product of its digits is 57600, while the sum is 34.

Adding to 22145143345 its reverse (54334154122), we get a palindrome (76479297467).

The spelling of 22145143345 in words is "twenty-two billion, one hundred forty-five million, one hundred forty-three thousand, three hundred forty-five".