11520503305220 has 96 divisors (see below), whose sum is σ = 29789215319808. Its totient is φ = 3644439777792.

The previous prime is 11520503305217. The next prime is 11520503305253. The reversal of 11520503305220 is 2250330502511.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2729834 + ... + 5522046.

It is an arithmetic number, because the mean of its divisors is an integer number (310304326248).

Almost surely, 2^{11520503305220} is an apocalyptic number.

11520503305220 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 11520503305220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14894607659904).

11520503305220 is an abundant number, since it is smaller than the sum of its proper divisors (18268712014588).

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

11520503305220 is a wasteful number, since it uses less digits than its factorization.

11520503305220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794509 (or 2794507 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 11520503305220 its reverse (2250330502511), we get a palindrome (13770833807731).

The spelling of 11520503305220 in words is "eleven trillion, five hundred twenty billion, five hundred three million, three hundred five thousand, two hundred twenty".