11665847226 has 64 divisors (see below), whose sum is σ = 26390033280. Its totient is φ = 3405480960.

The previous prime is 11665847177. The next prime is 11665847257. The reversal of 11665847226 is 62274856611.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 868030 + ... + 881366.

It is an arithmetic number, because the mean of its divisors is an integer number (412344270).

Almost surely, 2^11665847226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11665847226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13195016640).

11665847226 is an abundant number, since it is smaller than the sum of its proper divisors (14724186054).

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

11665847226 is a wasteful number, since it uses less digits than its factorization.

11665847226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13839.

The product of its digits is 967680, while the sum is 48.

The spelling of 11665847226 in words is "eleven billion, six hundred sixty-five million, eight hundred forty-seven thousand, two hundred twenty-six".