11444443420 has 24 divisors (see below), whose sum is σ = 24862068000. Its totient is φ = 4419922752.

The previous prime is 11444443399. The next prime is 11444443427. The reversal of 11444443420 is 2434444411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11444443427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9865320 + ... + 9866479.

It is an arithmetic number, because the mean of its divisors is an integer number (1035919500).

Almost surely, 2^11444443420 is an apocalyptic number.

11444443420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11444443420 is an abundant number, since it is smaller than the sum of its proper divisors (13417624580).

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

11444443420 is a wasteful number, since it uses less digits than its factorization.

11444443420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19731837 (or 19731835 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 11444443420 its reverse (2434444411), we get a palindrome (13878887831).

Subtracting from 11444443420 its reverse (2434444411), we obtain a palindrome (9009999009).

The spelling of 11444443420 in words is "eleven billion, four hundred forty-four million, four hundred forty-three thousand, four hundred twenty".