11159664280 has 64 divisors (see below), whose sum is σ = 26613671040. Its totient is φ = 4196954112.

The previous prime is 11159664233. The next prime is 11159664281. The reversal of 11159664280 is 8246695111.

11159664280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11159664281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694497 + ... + 710383.

It is an arithmetic number, because the mean of its divisors is an integer number (415838610).

Almost surely, 2^11159664280 is an apocalyptic number.

11159664280 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 11159664280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13306835520).

11159664280 is an abundant number, since it is smaller than the sum of its proper divisors (15454006760).

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

11159664280 is a wasteful number, since it uses less digits than its factorization.

11159664280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16948 (or 16944 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 11159664280 in words is "eleven billion, one hundred fifty-nine million, six hundred sixty-four thousand, two hundred eighty".