63996489312 has 96 divisors (see below), whose sum is σ = 192244614912. Its totient is φ = 18260411904.

The previous prime is 63996489299. The next prime is 63996489313. The reversal of 63996489312 is 21398469936.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63996489313) 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, 445803 + ... + 571605.

It is an arithmetic number, because the mean of its divisors is an integer number (2002548072).

Almost surely, 2^63996489312 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 63996489312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96122307456).

63996489312 is an abundant number, since it is smaller than the sum of its proper divisors (128248125600).

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

63996489312 is a wasteful number, since it uses less digits than its factorization.

63996489312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126580 (or 126572 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 60.

The spelling of 63996489312 in words is "sixty-three billion, nine hundred ninety-six million, four hundred eighty-nine thousand, three hundred twelve".