63605564928 has 280 divisors, whose sum is σ = 200594136600. Its totient is φ = 20083728384.

The previous prime is 63605564873. The next prime is 63605564933. The reversal of 63605564928 is 82946550636.

63605564928 is a `hidden beast` number, since 6 + 3 + 60 + 556 + 4 + 9 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 27 ways as a sum of consecutive naturals, for example, 7087228 + ... + 7096196.

Almost surely, 2^63605564928 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 63605564928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100297068300).

63605564928 is an abundant number, since it is smaller than the sum of its proper divisors (136988571672).

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

63605564928 is an frugal number, since it uses more digits than its factorization.

63605564928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9024 (or 8993 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 63605564928 in words is "sixty-three billion, six hundred five million, five hundred sixty-four thousand, nine hundred twenty-eight".