448517721577 has 2 divisors, whose sum is σ = 448517721578. Its totient is φ = 448517721576.

The previous prime is 448517721563. The next prime is 448517721611. The reversal of 448517721577 is 775127715844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234237608361 + 214280113216 = 483981^2 + 462904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-448517721577 is a prime.

It is not a weakly prime, because it can be changed into another prime (448517721277) 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 as a sum of consecutive naturals, namely, 224258860788 + 224258860789.

It is an arithmetic number, because the mean of its divisors is an integer number (224258860789).

Almost surely, 2^448517721577 is an apocalyptic number.

It is an amenable number.

448517721577 is a deficient number, since it is larger than the sum of its proper divisors (1).

448517721577 is an equidigital number, since it uses as much as digits as its factorization.

448517721577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15366400, while the sum is 58.

The spelling of 448517721577 in words is "four hundred forty-eight billion, five hundred seventeen million, seven hundred twenty-one thousand, five hundred seventy-seven".