63320138784 has 144 divisors (see below), whose sum is σ = 205986231360. Its totient is φ = 18074257920.

The previous prime is 63320138743. The next prime is 63320138807. The reversal of 63320138784 is 48783102336.

63320138784 is a `hidden beast` number, since 63 + 3 + 201 + 387 + 8 + 4 = 666.

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

It is a super-3 number, since 3×63320138784³ (a number of 33 digits) contains 333 as substring.

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, 2185062 + ... + 2213850.

It is an arithmetic number, because the mean of its divisors is an integer number (1430459940).

Almost surely, 2^63320138784 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 63320138784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102993115680).

63320138784 is an abundant number, since it is smaller than the sum of its proper divisors (142666092576).

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

63320138784 is a wasteful number, since it uses less digits than its factorization.

63320138784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29903 (or 29892 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 63320138784 in words is "sixty-three billion, three hundred twenty million, one hundred thirty-eight thousand, seven hundred eighty-four".