63636663636 has 384 divisors, whose sum is σ = 210212352000. Its totient is φ = 16199336448.

The previous prime is 63636663617. The next prime is 63636663679.

63636663636 is nontrivially palindromic in base 10.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 127 ways as a sum of consecutive naturals, for example, 50544775 + ... + 50546033.

It is an arithmetic number, because the mean of its divisors is an integer number (547428000).

Almost surely, 2^63636663636 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 63636663636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105106176000).

63636663636 is an abundant number, since it is smaller than the sum of its proper divisors (146575688364).

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

63636663636 is a wasteful number, since it uses less digits than its factorization.

63636663636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468 (or 1460 counting only the distinct ones).

The product of its digits is 22674816, while the sum is 54.

The spelling of 63636663636 in words is "sixty-three billion, six hundred thirty-six million, six hundred sixty-three thousand, six hundred thirty-six".