12315223332540 has 36 divisors (see below), whose sum is σ = 37356177442584. Its totient is φ = 3284059555296.

The previous prime is 12315223332479. The next prime is 12315223332571. The reversal of 12315223332540 is 4523332251321.

12315223332540 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 52 + 2 + 33 + 32 + 540 = 666.

12315223332540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 12315223332495 and 12315223332504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34208953522 + ... + 34208953881.

Almost surely, 2^{12315223332540} is an apocalyptic number.

12315223332540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12315223332540 is an abundant number, since it is smaller than the sum of its proper divisors (25040954110044).

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

12315223332540 is a wasteful number, since it uses less digits than its factorization.

12315223332540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68417907418 (or 68417907413 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 12315223332540 its reverse (4523332251321), we get a palindrome (16838555583861).

The spelling of 12315223332540 in words is "twelve trillion, three hundred fifteen billion, two hundred twenty-three million, three hundred thirty-two thousand, five hundred forty".