12712421593 has 2 divisors, whose sum is σ = 12712421594. Its totient is φ = 12712421592.

The previous prime is 12712421587. The next prime is 12712421647. The reversal of 12712421593 is 39512421721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7175275849 + 5537145744 = 84707^2 + 74412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12712421593 is a prime.

It is not a weakly prime, because it can be changed into another prime (12712421543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6356210796 + 6356210797.

It is an arithmetic number, because the mean of its divisors is an integer number (6356210797).

Almost surely, 2^12712421593 is an apocalyptic number.

It is an amenable number.

12712421593 is a deficient number, since it is larger than the sum of its proper divisors (1).

12712421593 is an equidigital number, since it uses as much as digits as its factorization.

12712421593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 37.

The spelling of 12712421593 in words is "twelve billion, seven hundred twelve million, four hundred twenty-one thousand, five hundred ninety-three".