63444323081 has 8 divisors (see below), whose sum is σ = 67263957600. Its totient is φ = 59672734560.

The previous prime is 63444323071. The next prime is 63444323099. The reversal of 63444323081 is 18032344436.

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

It is a de Polignac number, because none of the positive numbers 2^k-63444323081 is a prime.

It is a super-2 number, since 2×63444323081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63444323071) 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 7 ways as a sum of consecutive naturals, for example, 12008780 + ... + 12014061.

It is an arithmetic number, because the mean of its divisors is an integer number (8407994700).

Almost surely, 2^63444323081 is an apocalyptic number.

It is an amenable number.

63444323081 is a deficient number, since it is larger than the sum of its proper divisors (3819634519).

63444323081 is a wasteful number, since it uses less digits than its factorization.

63444323081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24022999.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 63444323081 in words is "sixty-three billion, four hundred forty-four million, three hundred twenty-three thousand, eighty-one".