449663499693 has 6 divisors (see below), whose sum is σ = 649513944014. Its totient is φ = 299775666456.

The previous prime is 449663499667. The next prime is 449663499787. The reversal of 449663499693 is 396994366944.

449663499693 is a `hidden beast` number, since 4 + 49 + 6 + 6 + 3 + 499 + 6 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 373960379529 + 75703120164 = 611523^2 + 275142^2 .

It is not a de Polignac number, because 449663499693 - 2⁸ = 449663499437 is a prime.

It is a super-2 number, since 2×449663499693² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449663499193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24981305530 + ... + 24981305547.

Almost surely, 2^449663499693 is an apocalyptic number.

It is an amenable number.

449663499693 is a deficient number, since it is larger than the sum of its proper divisors (199850444321).

449663499693 is a wasteful number, since it uses less digits than its factorization.

449663499693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49962611083 (or 49962611080 counting only the distinct ones).

The product of its digits is 816293376, while the sum is 72.

The spelling of 449663499693 in words is "four hundred forty-nine billion, six hundred sixty-three million, four hundred ninety-nine thousand, six hundred ninety-three".