63723328449 has 8 divisors (see below), whose sum is σ = 92688477792. Its totient is φ = 38620199040.

The previous prime is 63723328441. The next prime is 63723328451. The reversal of 63723328449 is 94482332736.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63723328449 - 2³ = 63723328441 is a prime.

It is a super-4 number, since 4×63723328449⁴ (a number of 44 digits) contains 4444 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63723328441) 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 7 ways as a sum of consecutive naturals, for example, 965504944 + ... + 965505009.

It is an arithmetic number, because the mean of its divisors is an integer number (11586059724).

Almost surely, 2^63723328449 is an apocalyptic number.

It is an amenable number.

63723328449 is a deficient number, since it is larger than the sum of its proper divisors (28965149343).

63723328449 is a wasteful number, since it uses less digits than its factorization.

63723328449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931009967.

The product of its digits is 5225472, while the sum is 51.

The spelling of 63723328449 in words is "sixty-three billion, seven hundred twenty-three million, three hundred twenty-eight thousand, four hundred forty-nine".