11389206528 has 320 divisors, whose sum is σ = 38950858320. Its totient is φ = 3248750592.

The previous prime is 11389206527. The next prime is 11389206547. The reversal of 11389206528 is 82560298311.

11389206528 is a `hidden beast` number, since 1 + 1 + 38 + 92 + 0 + 6 + 528 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11389206523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18579150 + ... + 18579762.

Almost surely, 2^11389206528 is an apocalyptic number.

11389206528 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 11389206528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19475429160).

11389206528 is an abundant number, since it is smaller than the sum of its proper divisors (27561651792).

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

11389206528 is an frugal number, since it uses more digits than its factorization.

11389206528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 11389206528 in words is "eleven billion, three hundred eighty-nine million, two hundred six thousand, five hundred twenty-eight".