449573409569 has 2 divisors, whose sum is σ = 449573409570. Its totient is φ = 449573409568.

The previous prime is 449573409539. The next prime is 449573409601. The reversal of 449573409569 is 965904375944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 353929806400 + 95643603169 = 594920^2 + 309263^2 .

It is a cyclic number.

It is not a de Polignac number, because 449573409569 - 2²⁸ = 449304974113 is a prime.

It is a super-2 number, since 2×449573409569² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (449573409539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224786704784 + 224786704785.

It is an arithmetic number, because the mean of its divisors is an integer number (224786704785).

Almost surely, 2^449573409569 is an apocalyptic number.

It is an amenable number.

449573409569 is a deficient number, since it is larger than the sum of its proper divisors (1).

449573409569 is an equidigital number, since it uses as much as digits as its factorization.

449573409569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 146966400, while the sum is 65.

The spelling of 449573409569 in words is "four hundred forty-nine billion, five hundred seventy-three million, four hundred nine thousand, five hundred sixty-nine".