12533621152 has 48 divisors (see below), whose sum is σ = 26664641640. Its totient is φ = 5764948992.

The previous prime is 12533621143. The next prime is 12533621153. The reversal of 12533621152 is 25112633521.

12533621152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9762230416 + 2771390736 = 98804^2 + 52644^2 .

It is not an unprimeable number, because it can be changed into a prime (12533621153) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 70474 + ... + 173302.

Almost surely, 2^12533621152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12533621152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13332320820).

12533621152 is an abundant number, since it is smaller than the sum of its proper divisors (14131020488).

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

12533621152 is a wasteful number, since it uses less digits than its factorization.

12533621152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103145 (or 103137 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The spelling of 12533621152 in words is "twelve billion, five hundred thirty-three million, six hundred twenty-one thousand, one hundred fifty-two".