11111209984 has 88 divisors (see below), whose sum is σ = 25671345120. Its totient is φ = 4708171776.

The previous prime is 11111209939. The next prime is 11111210003. The reversal of 11111209984 is 48990211111.

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 7 ways as a sum of consecutive naturals, for example, 629244 + ... + 646660.

Almost surely, 2^11111209984 is an apocalyptic number.

11111209984 is a gapful number since it is divisible by the number (14) 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 11111209984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12835672560).

11111209984 is an abundant number, since it is smaller than the sum of its proper divisors (14560135136).

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

11111209984 is an equidigital number, since it uses as much as digits as its factorization.

11111209984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17533 (or 17515 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 37.

The spelling of 11111209984 in words is "eleven billion, one hundred eleven million, two hundred nine thousand, nine hundred eighty-four".