449453925649 has 16 divisors (see below), whose sum is σ = 480273511680. Its totient is φ = 419353474320.

The previous prime is 449453925647. The next prime is 449453925709. The reversal of 449453925649 is 946529354944.

It is a cyclic number.

It is not a de Polignac number, because 449453925649 - 2¹ = 449453925647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449453925647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6333534 + ... + 6404104.

It is an arithmetic number, because the mean of its divisors is an integer number (30017094480).

Almost surely, 2^449453925649 is an apocalyptic number.

It is an amenable number.

449453925649 is a deficient number, since it is larger than the sum of its proper divisors (30819586031).

449453925649 is a wasteful number, since it uses less digits than its factorization.

449453925649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75660.

The product of its digits is 167961600, while the sum is 64.

The spelling of 449453925649 in words is "four hundred forty-nine billion, four hundred fifty-three million, nine hundred twenty-five thousand, six hundred forty-nine".