63955330479040 has 2016 divisors, whose sum is σ = 215476760604672. Its totient is φ = 17677622476800.

The previous prime is 63955330479037. The next prime is 63955330479071. The reversal of 63955330479040 is 4097403355936.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 131325113677 + ... + 131325114163.

It is an arithmetic number, because the mean of its divisors is an integer number (106883313792).

Almost surely, 2^{63955330479040} 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 63955330479040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107738380302336).

63955330479040 is an abundant number, since it is smaller than the sum of its proper divisors (151521430125632).

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

63955330479040 is a wasteful number, since it uses less digits than its factorization.

63955330479040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 58.

The spelling of 63955330479040 in words is "sixty-three trillion, nine hundred fifty-five billion, three hundred thirty million, four hundred seventy-nine thousand, forty".