12543554327 has 2 divisors, whose sum is σ = 12543554328. Its totient is φ = 12543554326.

The previous prime is 12543554293. The next prime is 12543554339. The reversal of 12543554327 is 72345534521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12543554327 - 2⁸ = 12543554071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12543554927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6271777163 + 6271777164.

It is an arithmetic number, because the mean of its divisors is an integer number (6271777164).

Almost surely, 2^12543554327 is an apocalyptic number.

12543554327 is a deficient number, since it is larger than the sum of its proper divisors (1).

12543554327 is an equidigital number, since it uses as much as digits as its factorization.

12543554327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504000, while the sum is 41.

The spelling of 12543554327 in words is "twelve billion, five hundred forty-three million, five hundred fifty-four thousand, three hundred twenty-seven".