11185688196 has 60 divisors (see below), whose sum is σ = 29350531980. Its totient is φ = 3714672960.

The previous prime is 11185688179. The next prime is 11185688197. The reversal of 11185688196 is 69188658111.

It can be written as a sum of positive squares in 2 ways, for example, as 5319660096 + 5866028100 = 72936^2 + 76590^2 .

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

It is not an unprimeable number, because it can be changed into a prime (11185688197) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22986 + ... + 151326.

It is an arithmetic number, because the mean of its divisors is an integer number (489175533).

Almost surely, 2^11185688196 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 11185688196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14675265990).

11185688196 is an abundant number, since it is smaller than the sum of its proper divisors (18164843784).

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

11185688196 is a wasteful number, since it uses less digits than its factorization.

11185688196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128626 (or 128615 counting only the distinct ones).

The product of its digits is 829440, while the sum is 54.

The spelling of 11185688196 in words is "eleven billion, one hundred eighty-five million, six hundred eighty-eight thousand, one hundred ninety-six".