12543152512345 has 32 divisors (see below), whose sum is σ = 18526331738880. Its totient is φ = 7938947600640.

The previous prime is 12543152512327. The next prime is 12543152512361. The reversal of 12543152512345 is 54321525134521.

It is not a de Polignac number, because 12543152512345 - 2⁷ = 12543152512217 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7259290 + ... + 8819500.

It is an arithmetic number, because the mean of its divisors is an integer number (578947866840).

Almost surely, 2^{12543152512345} is an apocalyptic number.

It is an amenable number.

12543152512345 is a deficient number, since it is larger than the sum of its proper divisors (5983179226535).

12543152512345 is a wasteful number, since it uses less digits than its factorization.

12543152512345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577905.

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

Adding to 12543152512345 its reverse (54321525134521), we get a palindrome (66864677646866).

The spelling of 12543152512345 in words is "twelve trillion, five hundred forty-three billion, one hundred fifty-two million, five hundred twelve thousand, three hundred forty-five".