63938248808544 has 144 divisors (see below), whose sum is σ = 198375580572624. Its totient is φ = 19373107737600.

The previous prime is 63938248808531. The next prime is 63938248808573. The reversal of 63938248808544 is 44580884283936.

63938248808544 is a `hidden beast` number, since 6 + 3 + 9 + 38 + 2 + 48 + 8 + 0 + 8 + 544 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27986262 + ... + 30184554.

It is an arithmetic number, because the mean of its divisors is an integer number (1377608198421).

Almost surely, 2^{63938248808544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63938248808544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99187790286312).

63938248808544 is an abundant number, since it is smaller than the sum of its proper divisors (134437331764080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63938248808544 is a wasteful number, since it uses less digits than its factorization.

63938248808544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207501 (or 2207490 counting only the distinct ones).

The product of its (nonzero) digits is 1274019840, while the sum is 72.

The spelling of 63938248808544 in words is "sixty-three trillion, nine hundred thirty-eight billion, two hundred forty-eight million, eight hundred eight thousand, five hundred forty-four".