63647344896 has 144 divisors (see below), whose sum is σ = 170837520000. Its totient is φ = 21035925504.

The previous prime is 63647344889. The next prime is 63647344897. The reversal of 63647344896 is 69844374636.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (63647344897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60673780 + ... + 60674828.

Almost surely, 2^63647344896 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 63647344896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85418760000).

63647344896 is an abundant number, since it is smaller than the sum of its proper divisors (107190175104).

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

63647344896 is a wasteful number, since it uses less digits than its factorization.

63647344896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664 (or 1650 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 60.

The spelling of 63647344896 in words is "sixty-three billion, six hundred forty-seven million, three hundred forty-four thousand, eight hundred ninety-six".