11444321440 has 48 divisors (see below), whose sum is σ = 27125394912. Its totient is φ = 4562797824.

The previous prime is 11444321437. The next prime is 11444321459. The reversal of 11444321440 is 4412344411.

It is a junction number, because it is equal to n+sod(n) for n = 11444321399 and 11444321408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67374 + ... + 165613.

It is an arithmetic number, because the mean of its divisors is an integer number (565112394).

Almost surely, 2^11444321440 is an apocalyptic number.

11444321440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11444321440 is an abundant number, since it is smaller than the sum of its proper divisors (15681073472).

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

11444321440 is a wasteful number, since it uses less digits than its factorization.

11444321440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233309 (or 233301 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 11444321440 its reverse (4412344411), we get a palindrome (15856665851).

The spelling of 11444321440 in words is "eleven billion, four hundred forty-four million, three hundred twenty-one thousand, four hundred forty".