11385733788 has 192 divisors, whose sum is σ = 35157696000. Its totient is φ = 3140881920.

The previous prime is 11385733787. The next prime is 11385733817. The reversal of 11385733788 is 88733758311.

11385733788 is a `hidden beast` number, since 1 + 1 + 38 + 573 + 37 + 8 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11385733787) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1122363 + ... + 1132461.

It is an arithmetic number, because the mean of its divisors is an integer number (183113000).

Almost surely, 2^11385733788 is an apocalyptic number.

11385733788 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 11385733788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17578848000).

11385733788 is an abundant number, since it is smaller than the sum of its proper divisors (23771962212).

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

11385733788 is a wasteful number, since it uses less digits than its factorization.

11385733788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10209 (or 10201 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The spelling of 11385733788 in words is "eleven billion, three hundred eighty-five million, seven hundred thirty-three thousand, seven hundred eighty-eight".