4021444134431 has 4 divisors (see below), whose sum is σ = 4021744278000. Its totient is φ = 4021143990864.

The previous prime is 4021444134413. The next prime is 4021444134437. The reversal of 4021444134431 is 1344314441204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4021444134431 - 2³⁰ = 4020370392607 is a prime.

It is a super-2 number, since 2×4021444134431² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4021444134391 and 4021444134400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021444134437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150051686 + ... + 150078483.

It is an arithmetic number, because the mean of its divisors is an integer number (1005436069500).

Almost surely, 2^{4021444134431} is an apocalyptic number.

4021444134431 is a deficient number, since it is larger than the sum of its proper divisors (300143569).

4021444134431 is a wasteful number, since it uses less digits than its factorization.

4021444134431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300143568.

The product of its (nonzero) digits is 73728, while the sum is 35.

Adding to 4021444134431 its reverse (1344314441204), we get a palindrome (5365758575635).

The spelling of 4021444134431 in words is "four trillion, twenty-one billion, four hundred forty-four million, one hundred thirty-four thousand, four hundred thirty-one".