11992015728 has 180 divisors, whose sum is σ = 42159687024. Its totient is φ = 3114777600.

The previous prime is 11992015709. The next prime is 11992015751. The reversal of 11992015728 is 82751029911.

11992015728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 72808 + ... + 171128.

Almost surely, 2^11992015728 is an apocalyptic number.

11992015728 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 11992015728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21079843512).

11992015728 is an abundant number, since it is smaller than the sum of its proper divisors (30167671296).

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

11992015728 is a wasteful number, since it uses less digits than its factorization.

11992015728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98364 (or 98344 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The spelling of 11992015728 in words is "eleven billion, nine hundred ninety-two million, fifteen thousand, seven hundred twenty-eight".