6444416057 has 2 divisors, whose sum is σ = 6444416058. Its totient is φ = 6444416056.

The previous prime is 6444416051. The next prime is 6444416071. The reversal of 6444416057 is 7506144446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3578312761 + 2866103296 = 59819^2 + 53536^2 .

It is a cyclic number.

It is not a de Polignac number, because 6444416057 - 2⁶ = 6444415993 is a prime.

It is not a weakly prime, because it can be changed into another prime (6444416051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222208028 + 3222208029.

It is an arithmetic number, because the mean of its divisors is an integer number (3222208029).

Almost surely, 2^6444416057 is an apocalyptic number.

It is an amenable number.

6444416057 is a deficient number, since it is larger than the sum of its proper divisors (1).

6444416057 is an equidigital number, since it uses as much as digits as its factorization.

6444416057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 41.

The square root of 6444416057 is about 80277.1203830830. The cubic root of 6444416057 is about 1860.9206581250.

The spelling of 6444416057 in words is "six billion, four hundred forty-four million, four hundred sixteen thousand, fifty-seven".