11889261384 has 256 divisors, whose sum is σ = 41645076480. Its totient is φ = 2726507520.

The previous prime is 11889261353. The next prime is 11889261403. The reversal of 11889261384 is 48316298811.

11889261384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 541794 + ... + 563310.

It is an arithmetic number, because the mean of its divisors is an integer number (162676080).

Almost surely, 2^11889261384 is an apocalyptic number.

11889261384 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 11889261384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20822538240).

11889261384 is an abundant number, since it is smaller than the sum of its proper divisors (29755815096).

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

11889261384 is a wasteful number, since it uses less digits than its factorization.

11889261384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21580 (or 21576 counting only the distinct ones).

The product of its digits is 663552, while the sum is 51.

The spelling of 11889261384 in words is "eleven billion, eight hundred eighty-nine million, two hundred sixty-one thousand, three hundred eighty-four".