63748554240 has 320 divisors, whose sum is σ = 234768973824. Its totient is φ = 14454816768.

The previous prime is 63748554239. The next prime is 63748554257. The reversal of 63748554240 is 4245584736.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 63748554240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6822852 + ... + 6832188.

Almost surely, 2^63748554240 is an apocalyptic number.

63748554240 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 63748554240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117384486912).

63748554240 is an abundant number, since it is smaller than the sum of its proper divisors (171020419584).

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

63748554240 is a wasteful number, since it uses less digits than its factorization.

63748554240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9497 (or 9481 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 48.

The spelling of 63748554240 in words is "sixty-three billion, seven hundred forty-eight million, five hundred fifty-four thousand, two hundred forty".