11285581884 has 48 divisors (see below), whose sum is σ = 27342554400. Its totient is φ = 3618608896.

The previous prime is 11285581873. The next prime is 11285581927. The reversal of 11285581884 is 48818558211.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33334 + ... + 153890.

It is an arithmetic number, because the mean of its divisors is an integer number (569636550).

Almost surely, 2^11285581884 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 11285581884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13671277200).

11285581884 is an abundant number, since it is smaller than the sum of its proper divisors (16056972516).

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

11285581884 is a wasteful number, since it uses less digits than its factorization.

11285581884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120862 (or 120860 counting only the distinct ones).

The product of its digits is 819200, while the sum is 51.

The spelling of 11285581884 in words is "eleven billion, two hundred eighty-five million, five hundred eighty-one thousand, eight hundred eighty-four".