13123533052 has 48 divisors (see below), whose sum is σ = 27008335872. Its totient is φ = 5462478720.

The previous prime is 13123533041. The next prime is 13123533053. The reversal of 13123533052 is 25033532131.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 13123533052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123533053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230373 + ... + 281635.

It is an arithmetic number, because the mean of its divisors is an integer number (562673664).

Almost surely, 2^13123533052 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 13123533052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13504167936).

13123533052 is an abundant number, since it is smaller than the sum of its proper divisors (13884802820).

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

13123533052 is a wasteful number, since it uses less digits than its factorization.

13123533052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51538 (or 51536 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 28.

The spelling of 13123533052 in words is "thirteen billion, one hundred twenty-three million, five hundred thirty-three thousand, fifty-two".