63604745568 has 288 divisors, whose sum is σ = 227164392000. Its totient is φ = 16774539264.

The previous prime is 63604745551. The next prime is 63604745609. The reversal of 63604745568 is 86554740636.

63604745568 is a `hidden beast` number, since 6 + 3 + 6 + 0 + 4 + 74 + 5 + 568 = 666.

63604745568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1259428 + ... + 1308956.

It is an arithmetic number, because the mean of its divisors is an integer number (788765250).

Almost surely, 2^63604745568 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 63604745568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113582196000).

63604745568 is an abundant number, since it is smaller than the sum of its proper divisors (163559646432).

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

63604745568 is a wasteful number, since it uses less digits than its factorization.

63604745568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49579 (or 49554 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 54.

The spelling of 63604745568 in words is "sixty-three billion, six hundred four million, seven hundred forty-five thousand, five hundred sixty-eight".