63689409636 has 24 divisors (see below), whose sum is σ = 148612774464. Its totient is φ = 21229210080.

The previous prime is 63689409611. The next prime is 63689409643. The reversal of 63689409636 is 63690498636.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 63689409636.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 680521 + ... + 768431.

It is an arithmetic number, because the mean of its divisors is an integer number (6192198936).

Almost surely, 2^63689409636 is an apocalyptic number.

It is an amenable number.

63689409636 is an abundant number, since it is smaller than the sum of its proper divisors (84923364828).

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

63689409636 is a wasteful number, since it uses less digits than its factorization.

63689409636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148291 (or 148289 counting only the distinct ones).

The product of its (nonzero) digits is 30233088, while the sum is 60.

The spelling of 63689409636 in words is "sixty-three billion, six hundred eighty-nine million, four hundred nine thousand, six hundred thirty-six".