4021444444140 has 96 divisors (see below), whose sum is σ = 12511540762560. Its totient is φ = 1072352590848.

The previous prime is 4021444444111. The next prime is 4021444444201. The reversal of 4021444444140 is 414444441204.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4021444444095 and 4021444444104.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21481422 + ... + 21667818.

It is an arithmetic number, because the mean of its divisors is an integer number (130328549610).

Almost surely, 2^{4021444444140} is an apocalyptic number.

It is an amenable number.

4021444444140 is an abundant number, since it is smaller than the sum of its proper divisors (8490096318420).

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

4021444444140 is a wasteful number, since it uses less digits than its factorization.

4021444444140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226368 (or 226360 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 36.

Adding to 4021444444140 its reverse (414444441204), we get a palindrome (4435888885344).

The spelling of 4021444444140 in words is "four trillion, twenty-one billion, four hundred forty-four million, four hundred forty-four thousand, one hundred forty".