63444753449 has 16 divisors (see below), whose sum is σ = 79116600960. Its totient is φ = 49427064960.

The previous prime is 63444753439. The next prime is 63444753461. The reversal of 63444753449 is 94435744436.

It is not a de Polignac number, because 63444753449 - 2⁴ = 63444753433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63444753449.

It is not an unprimeable number, because it can be changed into a prime (63444753409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292187 + ... + 460719.

It is an arithmetic number, because the mean of its divisors is an integer number (4944787560).

Almost surely, 2^63444753449 is an apocalyptic number.

It is an amenable number.

63444753449 is a deficient number, since it is larger than the sum of its proper divisors (15671847511).

63444753449 is a wasteful number, since it uses less digits than its factorization.

63444753449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173440.

The product of its digits is 17418240, while the sum is 53.

The spelling of 63444753449 in words is "sixty-three billion, four hundred forty-four million, seven hundred fifty-three thousand, four hundred forty-nine".