4021444134451 has 2 divisors, whose sum is σ = 4021444134452. Its totient is φ = 4021444134450.

The previous prime is 4021444134437. The next prime is 4021444134467. The reversal of 4021444134451 is 1544314441204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4021444134451 - 2²³ = 4021435745843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4021444134451.

It is not a weakly prime, because it can be changed into another prime (4021444134481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010722067225 + 2010722067226.

It is an arithmetic number, because the mean of its divisors is an integer number (2010722067226).

Almost surely, 2^{4021444134451} is an apocalyptic number.

4021444134451 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021444134451 is an equidigital number, since it uses as much as digits as its factorization.

4021444134451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122880, while the sum is 37.

Adding to 4021444134451 its reverse (1544314441204), we get a palindrome (5565758575655).

The spelling of 4021444134451 in words is "four trillion, twenty-one billion, four hundred forty-four million, one hundred thirty-four thousand, four hundred fifty-one".