11147385888 has 144 divisors (see below), whose sum is σ = 33215626080. Its totient is φ = 3677239296.

The previous prime is 11147385871. The next prime is 11147385947. The reversal of 11147385888 is 88858374111.

11147385888 is a `hidden beast` number, since 1 + 11 + 47 + 3 + 8 + 588 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 746883 + ... + 761661.

It is an arithmetic number, because the mean of its divisors is an integer number (230664070).

Almost surely, 2^11147385888 is an apocalyptic number.

11147385888 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 11147385888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16607813040).

11147385888 is an abundant number, since it is smaller than the sum of its proper divisors (22068240192).

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

11147385888 is an equidigital number, since it uses as much as digits as its factorization.

11147385888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14901 (or 14881 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 54.

The spelling of 11147385888 in words is "eleven billion, one hundred forty-seven million, three hundred eighty-five thousand, eight hundred eighty-eight".