1297594056709 has 2 divisors, whose sum is σ = 1297594056710. Its totient is φ = 1297594056708.

The previous prime is 1297594056697. The next prime is 1297594056727. The reversal of 1297594056709 is 9076504957921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1279210764484 + 18383292225 = 1131022^2 + 135585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1297594056709 - 2³⁹ = 747838242821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297594056739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648797028354 + 648797028355.

It is an arithmetic number, because the mean of its divisors is an integer number (648797028355).

Almost surely, 2^{1297594056709} is an apocalyptic number.

It is an amenable number.

1297594056709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297594056709 is an equidigital number, since it uses as much as digits as its factorization.

1297594056709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42865200, while the sum is 64.

The spelling of 1297594056709 in words is "one trillion, two hundred ninety-seven billion, five hundred ninety-four million, fifty-six thousand, seven hundred nine".