11518990560 has 1440 divisors, whose sum is σ = 55186373088. Its totient is φ = 2229534720.

The previous prime is 11518990531. The next prime is 11518990583. The reversal of 11518990560 is 6509981511.

11518990560 is a `hidden beast` number, since 1 + 1 + 5 + 1 + 89 + 9 + 0 + 560 = 666.

11518990560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a super-2 number, since 2×11518990560² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 239 ways as a sum of consecutive naturals, for example, 118752432 + ... + 118752528.

Almost surely, 2^11518990560 is an apocalyptic number.

11518990560 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 11518990560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27593186544).

11518990560 is an abundant number, since it is smaller than the sum of its proper divisors (43667382528).

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

11518990560 is a wasteful number, since it uses less digits than its factorization.

11518990560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 45.

The spelling of 11518990560 in words is "eleven billion, five hundred eighteen million, nine hundred ninety thousand, five hundred sixty".