12547003423 has 2 divisors, whose sum is σ = 12547003424. Its totient is φ = 12547003422.

The previous prime is 12547003397. The next prime is 12547003451. The reversal of 12547003423 is 32430074521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12547003423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12547003453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6273501711 + 6273501712.

It is an arithmetic number, because the mean of its divisors is an integer number (6273501712).

Almost surely, 2^12547003423 is an apocalyptic number.

12547003423 is a deficient number, since it is larger than the sum of its proper divisors (1).

12547003423 is an equidigital number, since it uses as much as digits as its factorization.

12547003423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 31.

Adding to 12547003423 its reverse (32430074521), we get a palindrome (44977077944).

The spelling of 12547003423 in words is "twelve billion, five hundred forty-seven million, three thousand, four hundred twenty-three".