20363163636 has 48 divisors (see below), whose sum is σ = 47807109504. Its totient is φ = 6745984896.

The previous prime is 20363163577. The next prime is 20363163637. The reversal of 20363163636 is 63636136302.

It is a junction number, because it is equal to n+sod(n) for n = 20363163594 and 20363163603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20363163637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1303705 + ... + 1319231.

It is an arithmetic number, because the mean of its divisors is an integer number (995981448).

Almost surely, 2^20363163636 is an apocalyptic number.

It is an amenable number.

20363163636 is an abundant number, since it is smaller than the sum of its proper divisors (27443945868).

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

20363163636 is a wasteful number, since it uses less digits than its factorization.

20363163636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16200 (or 16198 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 39.

Adding to 20363163636 its reverse (63636136302), we get a palindrome (83999299938).

The spelling of 20363163636 in words is "twenty billion, three hundred sixty-three million, one hundred sixty-three thousand, six hundred thirty-six".