44221320440 has 64 divisors (see below), whose sum is σ = 108626836320. Its totient is φ = 16068096000.

The previous prime is 44221320427. The next prime is 44221320463. The reversal of 44221320440 is 4402312244.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543200 + ... + 619280.

Almost surely, 2^44221320440 is an apocalyptic number.

44221320440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44221320440 is an abundant number, since it is smaller than the sum of its proper divisors (64405515880).

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

44221320440 is a wasteful number, since it uses less digits than its factorization.

44221320440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77424 (or 77420 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 44221320440 its reverse (4402312244), we get a palindrome (48623632684).

The spelling of 44221320440 in words is "forty-four billion, two hundred twenty-one million, three hundred twenty thousand, four hundred forty".