63986334720 has 352 divisors, whose sum is σ = 255160613376. Its totient is φ = 13295616000.

The previous prime is 63986334683. The next prime is 63986334733. The reversal of 63986334720 is 2743368936.

It is a happy number.

63986334720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (352).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1155670 + ... + 1209770.

Almost surely, 2^63986334720 is an apocalyptic number.

63986334720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63986334720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127580306688).

63986334720 is an abundant number, since it is smaller than the sum of its proper divisors (191174278656).

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

63986334720 is a wasteful number, since it uses less digits than its factorization.

63986334720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54147 (or 54129 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 51.

The spelling of 63986334720 in words is "sixty-three billion, nine hundred eighty-six million, three hundred thirty-four thousand, seven hundred twenty".