11066521664 has 56 divisors (see below), whose sum is σ = 24082223616. Its totient is φ = 5003840000.

The previous prime is 11066521663. The next prime is 11066521679. The reversal of 11066521664 is 46612566011.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11066521663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93314 + ... + 175614.

Almost surely, 2^11066521664 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 11066521664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12041111808).

11066521664 is an abundant number, since it is smaller than the sum of its proper divisors (13015701952).

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

11066521664 is a wasteful number, since it uses less digits than its factorization.

11066521664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82515 (or 82505 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 11066521664 in words is "eleven billion, sixty-six million, five hundred twenty-one thousand, six hundred sixty-four".