63441799808640 has 512 divisors, whose sum is σ = 222762159072000. Its totient is φ = 15229955604480.

The previous prime is 63441799808633. The next prime is 63441799808713. The reversal of 63441799808640 is 4680899714436.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1183390156 + ... + 1183443764.

Almost surely, 2^{63441799808640} is an apocalyptic number.

63441799808640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63441799808640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111381079536000).

63441799808640 is an abundant number, since it is smaller than the sum of its proper divisors (159320359263360).

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

63441799808640 is a wasteful number, since it uses less digits than its factorization.

63441799808640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54188 (or 54176 counting only the distinct ones).

The product of its (nonzero) digits is 250822656, while the sum is 69.

The spelling of 63441799808640 in words is "sixty-three trillion, four hundred forty-one billion, seven hundred ninety-nine million, eight hundred eight thousand, six hundred forty".