11156566144 has 64 divisors (see below), whose sum is σ = 22797391680. Its totient is φ = 5436288000.

The previous prime is 11156566123. The next prime is 11156566153. The reversal of 11156566144 is 44166565111.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 11156566097 and 11156566106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1018939 + ... + 1029829.

It is an arithmetic number, because the mean of its divisors is an integer number (356209245).

Almost surely, 2^11156566144 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 11156566144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11398695840).

11156566144 is an abundant number, since it is smaller than the sum of its proper divisors (11640825536).

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

11156566144 is a wasteful number, since it uses less digits than its factorization.

11156566144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11109 (or 11097 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The spelling of 11156566144 in words is "eleven billion, one hundred fifty-six million, five hundred sixty-six thousand, one hundred forty-four".