63744644736 has 256 divisors, whose sum is σ = 194116444800. Its totient is φ = 20583383040.

The previous prime is 63744644683. The next prime is 63744644737.

63744644736 is a `hidden beast` number, since 63 + 74 + 46 + 4 + 473 + 6 = 666.

63744644736 is nontrivially palindromic in base 10.

63744644736 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 (54).

It is not an unprimeable number, because it can be changed into a prime (63744644737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14122416 + ... + 14126928.

Almost surely, 2^63744644736 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 63744644736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97058222400).

63744644736 is an abundant number, since it is smaller than the sum of its proper divisors (130371800064).

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

63744644736 is a wasteful number, since it uses less digits than its factorization.

63744644736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4664 (or 4646 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 54.

The spelling of 63744644736 in words is "sixty-three billion, seven hundred forty-four million, six hundred forty-four thousand, seven hundred thirty-six".