11013531520 has 192 divisors, whose sum is σ = 27734873040. Its totient is φ = 4179517440.

The previous prime is 11013531467. The next prime is 11013531527. The reversal of 11013531520 is 2513531011.

It is a junction number, because it is equal to n+sod(n) for n = 11013531491 and 11013531500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11013531527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48517647 + ... + 48517873.

Almost surely, 2^11013531520 is an apocalyptic number.

11013531520 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 11013531520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13867436520).

11013531520 is an abundant number, since it is smaller than the sum of its proper divisors (16721341520).

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

11013531520 is an equidigital number, since it uses as much as digits as its factorization.

11013531520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The spelling of 11013531520 in words is "eleven billion, thirteen million, five hundred thirty-one thousand, five hundred twenty".