12315220251543 has 24 divisors (see below), whose sum is σ = 20547319352976. Its totient is φ = 7024724563200.

The previous prime is 12315220251541. The next prime is 12315220251559. The reversal of 12315220251543 is 34515202251321.

12315220251543 is a `hidden beast` number, since 1 + 2 + 31 + 52 + 20 + 2 + 515 + 43 = 666.

12315220251543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12315220251543 - 2¹ = 12315220251541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12315220251498 and 12315220251507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12315220251541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3658709028 + ... + 3658712393.

It is an arithmetic number, because the mean of its divisors is an integer number (856138306374).

Almost surely, 2^{12315220251543} is an apocalyptic number.

12315220251543 is a deficient number, since it is larger than the sum of its proper divisors (8232099101433).

12315220251543 is a wasteful number, since it uses less digits than its factorization.

12315220251543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7317421455 (or 7317421452 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 12315220251543 in words is "twelve trillion, three hundred fifteen billion, two hundred twenty million, two hundred fifty-one thousand, five hundred forty-three".