13233525156 has 72 divisors (see below), whose sum is σ = 35481045600. Its totient is φ = 4147079040.

The previous prime is 13233525139. The next prime is 13233525197. The reversal of 13233525156 is 65152533231.

13233525156 is a `hidden beast` number, since 1 + 323 + 35 + 251 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13233525156.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15760 + ... + 163448.

It is an arithmetic number, because the mean of its divisors is an integer number (492792300).

Almost surely, 2^13233525156 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 13233525156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17740522800).

13233525156 is an abundant number, since it is smaller than the sum of its proper divisors (22247520444).

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

13233525156 is a wasteful number, since it uses less digits than its factorization.

13233525156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147849 (or 147844 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The spelling of 13233525156 in words is "thirteen billion, two hundred thirty-three million, five hundred twenty-five thousand, one hundred fifty-six".