12543355093 has 2 divisors, whose sum is σ = 12543355094. Its totient is φ = 12543355092.

The previous prime is 12543355091. The next prime is 12543355151. The reversal of 12543355093 is 39055334521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12254932804 + 288422289 = 110702^2 + 16983^2 .

It is a cyclic number.

It is not a de Polignac number, because 12543355093 - 2¹ = 12543355091 is a prime.

Together with 12543355091, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12543355091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6271677546 + 6271677547.

It is an arithmetic number, because the mean of its divisors is an integer number (6271677547).

Almost surely, 2^12543355093 is an apocalyptic number.

It is an amenable number.

12543355093 is a deficient number, since it is larger than the sum of its proper divisors (1).

12543355093 is an equidigital number, since it uses as much as digits as its factorization.

12543355093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243000, while the sum is 40.

The spelling of 12543355093 in words is "twelve billion, five hundred forty-three million, three hundred fifty-five thousand, ninety-three".