40444000000 has 126 divisors (see below), whose sum is σ = 100921208192. Its totient is φ = 16176000000.

The previous prime is 40443999989. The next prime is 40444000007. The reversal of 40444000000 is 44404.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40444000007) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 3994945 + ... + 4005055.

Almost surely, 2^40444000000 is an apocalyptic number.

40444000000 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 40444000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50460604096).

40444000000 is an abundant number, since it is smaller than the sum of its proper divisors (60477208192).

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

40444000000 is an frugal number, since it uses more digits than its factorization.

40444000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10157 (or 10118 counting only the distinct ones).

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

Adding to 40444000000 its reverse (44404), we get a palindrome (40444044404).

The spelling of 40444000000 in words is "forty billion, four hundred forty-four million", and thus it is an aban number.