12315205546512 has 40 divisors (see below), whose sum is σ = 34706488359840. Its totient is φ = 3731880468480.

The previous prime is 12315205546493. The next prime is 12315205546517. The reversal of 12315205546512 is 21564550251321.

It is a happy number.

12315205546512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12315205546512³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (12315205546517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11662125937 + ... + 11662126992.

It is an arithmetic number, because the mean of its divisors is an integer number (867662208996).

Almost surely, 2^{12315205546512} is an apocalyptic number.

12315205546512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12315205546512 is an abundant number, since it is smaller than the sum of its proper divisors (22391282813328).

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

12315205546512 is a wasteful number, since it uses less digits than its factorization.

12315205546512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23324252951 (or 23324252945 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

Adding to 12315205546512 its reverse (21564550251321), we get a palindrome (33879755797833).

The spelling of 12315205546512 in words is "twelve trillion, three hundred fifteen billion, two hundred five million, five hundred forty-six thousand, five hundred twelve".