11521255152 has 160 divisors (see below), whose sum is σ = 33617848320. Its totient is φ = 3368448000.

The previous prime is 11521255099. The next prime is 11521255159. The reversal of 11521255152 is 25155212511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11521255159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6693652 + ... + 6695372.

It is an arithmetic number, because the mean of its divisors is an integer number (210111552).

Almost surely, 2^11521255152 is an apocalyptic number.

11521255152 is a gapful number since it is divisible by the number (12) 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 11521255152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16808924160).

11521255152 is an abundant number, since it is smaller than the sum of its proper divisors (22096593168).

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

11521255152 is a wasteful number, since it uses less digits than its factorization.

11521255152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183 (or 2177 counting only the distinct ones).

The product of its digits is 5000, while the sum is 30.

Adding to 11521255152 its reverse (25155212511), we get a palindrome (36676467663).

The spelling of 11521255152 in words is "eleven billion, five hundred twenty-one million, two hundred fifty-five thousand, one hundred fifty-two".