63564055536 has 40 divisors (see below), whose sum is σ = 169869462480. Its totient is φ = 20457396736.

The previous prime is 63564055523. The next prime is 63564055543. The reversal of 63564055536 is 63555046536.

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

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 7 ways as a sum of consecutive naturals, for example, 22830525 + ... + 22833308.

It is an arithmetic number, because the mean of its divisors is an integer number (4246736562).

Almost surely, 2^63564055536 is an apocalyptic number.

It is an amenable number.

63564055536 is an abundant number, since it is smaller than the sum of its proper divisors (106305406944).

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

63564055536 is a wasteful number, since it uses less digits than its factorization.

63564055536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45663873 (or 45663867 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 48.

Subtracting from 63564055536 its product of nonzero digits (4860000), we obtain a palindrome (63559195536).

The spelling of 63564055536 in words is "sixty-three billion, five hundred sixty-four million, fifty-five thousand, five hundred thirty-six".