22440144040 has 64 divisors (see below), whose sum is σ = 50851100160. Its totient is φ = 8912048640.

The previous prime is 22440143983. The next prime is 22440144049. The reversal of 22440144040 is 4044104422.

It is a junction number, because it is equal to n+sod(n) for n = 22440143996 and 22440144014.

It is not an unprimeable number, because it can be changed into a prime (22440144049) 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, 8823009 + ... + 8825551.

It is an arithmetic number, because the mean of its divisors is an integer number (794548440).

Almost surely, 2^22440144040 is an apocalyptic number.

22440144040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22440144040 is an abundant number, since it is smaller than the sum of its proper divisors (28410956120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22440144040 is a wasteful number, since it uses less digits than its factorization.

22440144040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042 (or 4038 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 22440144040 its reverse (4044104422), we get a palindrome (26484248462).

The spelling of 22440144040 in words is "twenty-two billion, four hundred forty million, one hundred forty-four thousand, forty".