11239186840 has 96 divisors (see below), whose sum is σ = 29593861920. Its totient is φ = 3830249472.

The previous prime is 11239186823. The next prime is 11239186867. The reversal of 11239186840 is 4868193211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 310152 + ... + 344488.

It is an arithmetic number, because the mean of its divisors is an integer number (308269395).

Almost surely, 2^11239186840 is an apocalyptic number.

11239186840 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 11239186840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14796930960).

11239186840 is an abundant number, since it is smaller than the sum of its proper divisors (18354675080).

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

11239186840 is a wasteful number, since it uses less digits than its factorization.

11239186840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34529 (or 34518 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 11239186840 in words is "eleven billion, two hundred thirty-nine million, one hundred eighty-six thousand, eight hundred forty".