4440444455540 has 24 divisors (see below), whose sum is σ = 9350908116480. Its totient is φ = 1771230208928.

The previous prime is 4440444455539. The next prime is 4440444455567. The reversal of 4440444455540 is 455544440444.

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 7 ways as a sum of consecutive naturals, for example, 309215972 + ... + 309230331.

It is an arithmetic number, because the mean of its divisors is an integer number (389621171520).

Almost surely, 2^{4440444455540} is an apocalyptic number.

It is an amenable number.

4440444455540 is an abundant number, since it is smaller than the sum of its proper divisors (4910463660940).

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

4440444455540 is a wasteful number, since it uses less digits than its factorization.

4440444455540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618446671 (or 618446669 counting only the distinct ones).

The product of its (nonzero) digits is 8192000, while the sum is 47.

Adding to 4440444455540 its reverse (455544440444), we get a palindrome (4895988895984).

It can be divided in two parts, 4440444 and 455540, that added together give a palindrome (4895984).

The spelling of 4440444455540 in words is "four trillion, four hundred forty billion, four hundred forty-four million, four hundred fifty-five thousand, five hundred forty".