12543576403 has 2 divisors, whose sum is σ = 12543576404. Its totient is φ = 12543576402.

The previous prime is 12543576371. The next prime is 12543576431. The reversal of 12543576403 is 30467534521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12543576403 - 2⁵ = 12543576371 is a prime.

It is not a weakly prime, because it can be changed into another prime (12543576433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6271788201 + 6271788202.

It is an arithmetic number, because the mean of its divisors is an integer number (6271788202).

Almost surely, 2^12543576403 is an apocalyptic number.

12543576403 is a deficient number, since it is larger than the sum of its proper divisors (1).

12543576403 is an equidigital number, since it uses as much as digits as its factorization.

12543576403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 12543576403 in words is "twelve billion, five hundred forty-three million, five hundred seventy-six thousand, four hundred three".