63665133156636 has 192 divisors, whose sum is σ = 164828437304832. Its totient is φ = 18965606400000.

The previous prime is 63665133156629. The next prime is 63665133156641.

63665133156636 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 63665133156636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1340548851 + ... + 1340596341.

It is an arithmetic number, because the mean of its divisors is an integer number (858481444296).

Almost surely, 2^{63665133156636} is an apocalyptic number.

63665133156636 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63665133156636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82414218652416).

63665133156636 is an abundant number, since it is smaller than the sum of its proper divisors (101163304148196).

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

63665133156636 is a wasteful number, since it uses less digits than its factorization.

63665133156636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48324 (or 48322 counting only the distinct ones).

The product of its digits is 94478400, while the sum is 60.

The spelling of 63665133156636 in words is "sixty-three trillion, six hundred sixty-five billion, one hundred thirty-three million, one hundred fifty-six thousand, six hundred thirty-six".