6444420053 has 2 divisors, whose sum is σ = 6444420054. Its totient is φ = 6444420052.

The previous prime is 6444420013. The next prime is 6444420077. The reversal of 6444420053 is 3500244446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6413927569 + 30492484 = 80087^2 + 5522^2 .

It is a cyclic number.

It is not a de Polignac number, because 6444420053 - 2⁸ = 6444419797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6444420013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222210026 + 3222210027.

It is an arithmetic number, because the mean of its divisors is an integer number (3222210027).

Almost surely, 2^6444420053 is an apocalyptic number.

It is an amenable number.

6444420053 is a deficient number, since it is larger than the sum of its proper divisors (1).

6444420053 is an equidigital number, since it uses as much as digits as its factorization.

6444420053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 32.

The square root of 6444420053 is about 80277.1452718643. The cubic root of 6444420053 is about 1860.9210427597.

Adding to 6444420053 its reverse (3500244446), we get a palindrome (9944664499).

The spelling of 6444420053 in words is "six billion, four hundred forty-four million, four hundred twenty thousand, fifty-three".