11643163136 has 80 divisors (see below), whose sum is σ = 26253944640. Its totient is φ = 5109780480.

The previous prime is 11643163093. The next prime is 11643163171. The reversal of 11643163136 is 63136134611.

It is a junction number, because it is equal to n+sod(n) for n = 11643163096 and 11643163105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127685 + ... + 198971.

It is an arithmetic number, because the mean of its divisors is an integer number (328174308).

Almost surely, 2^11643163136 is an apocalyptic number.

11643163136 is a gapful number since it is divisible by the number (16) 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 11643163136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13126972320).

11643163136 is an abundant number, since it is smaller than the sum of its proper divisors (14610781504).

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

11643163136 is an equidigital number, since it uses as much as digits as its factorization.

11643163136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71345 (or 71329 counting only the distinct ones).

The product of its digits is 23328, while the sum is 35.

Adding to 11643163136 its reverse (63136134611), we get a palindrome (74779297747).

The spelling of 11643163136 in words is "eleven billion, six hundred forty-three million, one hundred sixty-three thousand, one hundred thirty-six".