63171803968 has 168 divisors, whose sum is σ = 159436588416. Its totient is φ = 24182737920.

The previous prime is 63171803909. The next prime is 63171803993. The reversal of 63171803968 is 86930817136.

63171803968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (52).

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, 5591221 + ... + 5602507.

It is an arithmetic number, because the mean of its divisors is an integer number (949027312).

Almost surely, 2^63171803968 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 63171803968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79718294208).

63171803968 is an abundant number, since it is smaller than the sum of its proper divisors (96264784448).

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

63171803968 is a wasteful number, since it uses less digits than its factorization.

63171803968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11381 (or 11340 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 63171803968 in words is "sixty-three billion, one hundred seventy-one million, eight hundred three thousand, nine hundred sixty-eight".