11816075982520 has 128 divisors (see below), whose sum is σ = 27498690648000. Its totient is φ = 4567545917440.

The previous prime is 11816075982427. The next prime is 11816075982523. The reversal of 11816075982520 is 2528957061811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11816075982523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36174330 + ... + 36499510.

Almost surely, 2^{11816075982520} is an apocalyptic number.

11816075982520 is a gapful number since it is divisible by the number (10) 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 11816075982520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13749345324000).

11816075982520 is an abundant number, since it is smaller than the sum of its proper divisors (15682614665480).

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

11816075982520 is a wasteful number, since it uses less digits than its factorization.

11816075982520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325513 (or 325509 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 55.

The spelling of 11816075982520 in words is "eleven trillion, eight hundred sixteen billion, seventy-five million, nine hundred eighty-two thousand, five hundred twenty".