11444424420 has 144 divisors (see below), whose sum is σ = 37932068160. Its totient is φ = 2560968960.

The previous prime is 11444424353. The next prime is 11444424443. The reversal of 11444424420 is 2442444411.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33751 + ... + 155009.

It is an arithmetic number, because the mean of its divisors is an integer number (263417140).

Almost surely, 2^11444424420 is an apocalyptic number.

11444424420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11444424420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18966034080).

11444424420 is an abundant number, since it is smaller than the sum of its proper divisors (26487643740).

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

11444424420 is a wasteful number, since it uses less digits than its factorization.

11444424420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121306 (or 121293 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 11444424420 its reverse (2442444411), we get a palindrome (13886868831).

The spelling of 11444424420 in words is "eleven billion, four hundred forty-four million, four hundred twenty-four thousand, four hundred twenty".