12533975797398 has 96 divisors (see below), whose sum is σ = 27978012787200. Its totient is φ = 3740124326400.

The previous prime is 12533975797393. The next prime is 12533975797417. The reversal of 12533975797398 is 89379757933521.

It is a happy number.

It is a Smith number, since the sum of its digits (78) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12533975797393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13566783 + ... + 14461173.

It is an arithmetic number, because the mean of its divisors is an integer number (291437633200).

Almost surely, 2^{12533975797398} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12533975797398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13989006393600).

12533975797398 is an abundant number, since it is smaller than the sum of its proper divisors (15444036989802).

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

12533975797398 is a wasteful number, since it uses less digits than its factorization.

12533975797398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894714 (or 894703 counting only the distinct ones).

The product of its digits is 2700507600, while the sum is 78.

The spelling of 12533975797398 in words is "twelve trillion, five hundred thirty-three billion, nine hundred seventy-five million, seven hundred ninety-seven thousand, three hundred ninety-eight".