22144340023 has 32 divisors (see below), whose sum is σ = 24733900800. Its totient is φ = 19698470400.

The previous prime is 22144340003. The next prime is 22144340027. The reversal of 22144340023 is 32004344122.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22144340023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22144340023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144340027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10400223 + ... + 10402351.

It is an arithmetic number, because the mean of its divisors is an integer number (772934400).

Almost surely, 2^22144340023 is an apocalyptic number.

22144340023 is a deficient number, since it is larger than the sum of its proper divisors (2589560777).

22144340023 is a wasteful number, since it uses less digits than its factorization.

22144340023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 22144340023 its reverse (32004344122), we get a palindrome (54148684145).

The spelling of 22144340023 in words is "twenty-two billion, one hundred forty-four million, three hundred forty thousand, twenty-three".