11818261860 has 96 divisors (see below), whose sum is σ = 34062336000. Its totient is φ = 3060102528.

The previous prime is 11818261747. The next prime is 11818261867. The reversal of 11818261860 is 6816281811.

It is not an unprimeable number, because it can be changed into a prime (11818261867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 341641 + ... + 374639.

It is an arithmetic number, because the mean of its divisors is an integer number (354816000).

Almost surely, 2^11818261860 is an apocalyptic number.

11818261860 is a gapful number since it is divisible by the number (10) 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 11818261860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17031168000).

11818261860 is an abundant number, since it is smaller than the sum of its proper divisors (22244074140).

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

11818261860 is a wasteful number, since it uses less digits than its factorization.

11818261860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33185 (or 33183 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 42.

The spelling of 11818261860 in words is "eleven billion, eight hundred eighteen million, two hundred sixty-one thousand, eight hundred sixty".