63603630636 has 144 divisors (see below), whose sum is σ = 183925857024. Its totient is φ = 16750326528.

The previous prime is 63603630619. The next prime is 63603630637.

63603630636 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (63603630637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11169406 + ... + 11175098.

It is an arithmetic number, because the mean of its divisors is an integer number (1277262896).

Almost surely, 2^63603630636 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 63603630636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91962928512).

63603630636 is an abundant number, since it is smaller than the sum of its proper divisors (120322226388).

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

63603630636 is a wasteful number, since it uses less digits than its factorization.

63603630636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6520 (or 6505 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 42.

The spelling of 63603630636 in words is "sixty-three billion, six hundred three million, six hundred thirty thousand, six hundred thirty-six".