449364649561 has 2 divisors, whose sum is σ = 449364649562. Its totient is φ = 449364649560.

The previous prime is 449364649553. The next prime is 449364649597. The reversal of 449364649561 is 165946463944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372777408025 + 76587241536 = 610555^2 + 276744^2 .

It is a cyclic number.

It is not a de Polignac number, because 449364649561 - 2³ = 449364649553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 449364649561.

It is not a weakly prime, because it can be changed into another prime (449364649501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224682324780 + 224682324781.

It is an arithmetic number, because the mean of its divisors is an integer number (224682324781).

Almost surely, 2^449364649561 is an apocalyptic number.

It is an amenable number.

449364649561 is a deficient number, since it is larger than the sum of its proper divisors (1).

449364649561 is an equidigital number, since it uses as much as digits as its factorization.

449364649561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67184640, while the sum is 61.

The spelling of 449364649561 in words is "four hundred forty-nine billion, three hundred sixty-four million, six hundred forty-nine thousand, five hundred sixty-one".