44400040000 has 140 divisors (see below), whose sum is σ = 110841869248. Its totient is φ = 17640000000.

The previous prime is 44400039979. The next prime is 44400040007. The reversal of 44400040000 is 4000444.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (44400040007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6036325 + ... + 6043675.

Almost surely, 2^44400040000 is an apocalyptic number.

44400040000 is a gapful number since it is divisible by the number (40) 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 44400040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55420934624).

44400040000 is an abundant number, since it is smaller than the sum of its proper divisors (66441829248).

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

44400040000 is an equidigital number, since it uses as much as digits as its factorization.

44400040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7534 (or 7509 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 44400040000 its reverse (4000444), we get a palindrome (44404040444).

The spelling of 44400040000 in words is "forty-four billion, four hundred million, forty thousand".