4021443013440 has 112 divisors (see below), whose sum is σ = 12911543432640. Its totient is φ = 1060335513600.

The previous prime is 4021443013411. The next prime is 4021443013447. The reversal of 4021443013440 is 443103441204.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4021443013398 and 4021443013407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021443013447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23448286 + ... + 23619165.

Almost surely, 2^{4021443013440} is an apocalyptic number.

4021443013440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4021443013440 is an abundant number, since it is smaller than the sum of its proper divisors (8890100419200).

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

4021443013440 is a wasteful number, since it uses less digits than its factorization.

4021443013440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47067560 (or 47067550 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 4021443013440 its reverse (443103441204), we get a palindrome (4464546454644).

The spelling of 4021443013440 in words is "four trillion, twenty-one billion, four hundred forty-three million, thirteen thousand, four hundred forty".