11320985088 has 420 divisors, whose sum is σ = 39515032260. Its totient is φ = 3229341696.

The previous prime is 11320985063. The next prime is 11320985107. The reversal of 11320985088 is 88058902311.

It is a happy number.

11320985088 is a `hidden beast` number, since 1 + 132 + 0 + 9 + 8 + 508 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 18288843 + ... + 18289461.

Almost surely, 2^11320985088 is an apocalyptic number.

11320985088 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 11320985088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19757516130).

11320985088 is an abundant number, since it is smaller than the sum of its proper divisors (28194047172).

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

11320985088 is an frugal number, since it uses more digits than its factorization.

11320985088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 11320985088 in words is "eleven billion, three hundred twenty million, nine hundred eighty-five thousand, eighty-eight".