11866053888 has 432 divisors, whose sum is σ = 40176864000. Its totient is φ = 3335012352.

The previous prime is 11866053757. The next prime is 11866053919. The reversal of 11866053888 is 88835066811.

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 47 ways as a sum of consecutive naturals, for example, 16503193 + ... + 16503911.

It is an arithmetic number, because the mean of its divisors is an integer number (93002000).

Almost surely, 2^11866053888 is an apocalyptic number.

11866053888 is a gapful number since it is divisible by the number (18) 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 11866053888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20088432000).

11866053888 is an abundant number, since it is smaller than the sum of its proper divisors (28310810112).

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

11866053888 is a wasteful number, since it uses less digits than its factorization.

11866053888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 11866053888 in words is "eleven billion, eight hundred sixty-six million, fifty-three thousand, eight hundred eighty-eight".