440143220023 has 4 divisors (see below), whose sum is σ = 474000390808. Its totient is φ = 406286049240.

The previous prime is 440143219979. The next prime is 440143220039. The reversal of 440143220023 is 320022341044.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 440143220023 - 2¹³ = 440143211831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 440143220023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440143220723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16928585373 + ... + 16928585398.

It is an arithmetic number, because the mean of its divisors is an integer number (118500097702).

Almost surely, 2^440143220023 is an apocalyptic number.

440143220023 is a deficient number, since it is larger than the sum of its proper divisors (33857170785).

440143220023 is a wasteful number, since it uses less digits than its factorization.

440143220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33857170784.

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

Adding to 440143220023 its reverse (320022341044), we get a palindrome (760165561067).

The spelling of 440143220023 in words is "four hundred forty billion, one hundred forty-three million, two hundred twenty thousand, twenty-three".