4021444440243 has 12 divisors (see below), whose sum is σ = 5808952532760. Its totient is φ = 2680870905216.

The previous prime is 4021444440157. The next prime is 4021444440263. The reversal of 4021444440243 is 3420444441204.

It is a happy number.

4021444440243 is a `hidden beast` number, since 402 + 1 + 4 + 4 + 4 + 4 + 4 + 0 + 243 = 666.

It is not a de Polignac number, because 4021444440243 - 2¹⁷ = 4021444309171 is a prime.

It is a super-2 number, since 2×4021444440243² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4021444440198 and 4021444440207.

It is not an unprimeable number, because it can be changed into a prime (4021444440263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7394046 + ... + 7919267.

It is an arithmetic number, because the mean of its divisors is an integer number (484079377730).

Almost surely, 2^{4021444440243} is an apocalyptic number.

4021444440243 is a deficient number, since it is larger than the sum of its proper divisors (1787508092517).

4021444440243 is a wasteful number, since it uses less digits than its factorization.

4021444440243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15342498 (or 15342495 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 36.

Adding to 4021444440243 its reverse (3420444441204), we get a palindrome (7441888881447).

The spelling of 4021444440243 in words is "four trillion, twenty-one billion, four hundred forty-four million, four hundred forty thousand, two hundred forty-three".