11665470720 has 288 divisors, whose sum is σ = 39941983872. Its totient is φ = 2891186176.

The previous prime is 11665470709. The next prime is 11665470721. The reversal of 11665470720 is 2707456611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11665470721) 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, 5417164 + ... + 5419316.

It is an arithmetic number, because the mean of its divisors is an integer number (138687444).

Almost surely, 2^11665470720 is an apocalyptic number.

11665470720 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 11665470720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19970991936).

11665470720 is an abundant number, since it is smaller than the sum of its proper divisors (28276513152).

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

11665470720 is a wasteful number, since it uses less digits than its factorization.

11665470720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277 (or 2263 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 11665470720 in words is "eleven billion, six hundred sixty-five million, four hundred seventy thousand, seven hundred twenty".