12315321554452 has 96 divisors (see below), whose sum is σ = 25383036224000. Its totient is φ = 5225575493376.

The previous prime is 12315321554383. The next prime is 12315321554467. The reversal of 12315321554452 is 25445512351321.

12315321554452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12315321554399 and 12315321554408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 959953174 + ... + 959966002.

Almost surely, 2^{12315321554452} 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 12315321554452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12691518112000).

12315321554452 is an abundant number, since it is smaller than the sum of its proper divisors (13067714669548).

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

12315321554452 is a wasteful number, since it uses less digits than its factorization.

12315321554452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19750 (or 19734 counting only the distinct ones).

The product of its digits is 720000, while the sum is 43.

The spelling of 12315321554452 in words is "twelve trillion, three hundred fifteen billion, three hundred twenty-one million, five hundred fifty-four thousand, four hundred fifty-two".