63673940736 has 216 divisors, whose sum is σ = 210098214144. Its totient is φ = 18167961600.

The previous prime is 63673940651. The next prime is 63673940749. The reversal of 63673940736 is 63704937636.

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, 14303311 + ... + 14307761.

Almost surely, 2^63673940736 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 63673940736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105049107072).

63673940736 is an abundant number, since it is smaller than the sum of its proper divisors (146424273408).

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

63673940736 is a wasteful number, since it uses less digits than its factorization.

63673940736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5367 (or 5350 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 54.

The spelling of 63673940736 in words is "sixty-three billion, six hundred seventy-three million, nine hundred forty thousand, seven hundred thirty-six".