12730456897 has 2 divisors, whose sum is σ = 12730456898. Its totient is φ = 12730456896.

The previous prime is 12730456861. The next prime is 12730456903. The reversal of 12730456897 is 79865403721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8876654656 + 3853802241 = 94216^2 + 62079^2 .

It is a cyclic number.

It is not a de Polignac number, because 12730456897 - 2²⁷ = 12596239169 is a prime.

It is not a weakly prime, because it can be changed into another prime (12730450897) 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, 6365228448 + 6365228449.

It is an arithmetic number, because the mean of its divisors is an integer number (6365228449).

It is a 1-persistent number, because it is pandigital, but 2⋅12730456897 = 25460913794 is not.

Almost surely, 2^12730456897 is an apocalyptic number.

It is an amenable number.

12730456897 is a deficient number, since it is larger than the sum of its proper divisors (1).

12730456897 is an equidigital number, since it uses as much as digits as its factorization.

12730456897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 12730456897 in words is "twelve billion, seven hundred thirty million, four hundred fifty-six thousand, eight hundred ninety-seven".