4021440244044 has 24 divisors (see below), whose sum is σ = 9387585467568. Its totient is φ = 1339876524480.

The previous prime is 4021440244043. The next prime is 4021440244051. The reversal of 4021440244044 is 4404420441204.

It is a super-3 number, since 3×4021440244044³ (a number of 39 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4021440243996 and 4021440244014.

It is not an unprimeable number, because it can be changed into a prime (4021440244043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75416847 + ... + 75470150.

It is an arithmetic number, because the mean of its divisors is an integer number (391149394482).

Almost surely, 2^{4021440244044} is an apocalyptic number.

It is an amenable number.

4021440244044 is an abundant number, since it is smaller than the sum of its proper divisors (5366145223524).

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

4021440244044 is a wasteful number, since it uses less digits than its factorization.

4021440244044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150889225 (or 150889223 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 33.

Adding to 4021440244044 its reverse (4404420441204), we get a palindrome (8425860685248).

The spelling of 4021440244044 in words is "four trillion, twenty-one billion, four hundred forty million, two hundred forty-four thousand, forty-four".