448571320829 has 2 divisors, whose sum is σ = 448571320830. Its totient is φ = 448571320828.

The previous prime is 448571320823. The next prime is 448571320903. The reversal of 448571320829 is 928023175844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 326052420100 + 122518900729 = 571010^2 + 350027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-448571320829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448571320823) 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, 224285660414 + 224285660415.

It is an arithmetic number, because the mean of its divisors is an integer number (224285660415).

Almost surely, 2^448571320829 is an apocalyptic number.

It is an amenable number.

448571320829 is a deficient number, since it is larger than the sum of its proper divisors (1).

448571320829 is an equidigital number, since it uses as much as digits as its factorization.

448571320829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 448571320829 in words is "four hundred forty-eight billion, five hundred seventy-one million, three hundred twenty thousand, eight hundred twenty-nine".