1296706117673 has 2 divisors, whose sum is σ = 1296706117674. Its totient is φ = 1296706117672.

The previous prime is 1296706117661. The next prime is 1296706117717. The reversal of 1296706117673 is 3767116076921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1277019782809 + 19686334864 = 1130053^2 + 140308^2 .

It is a cyclic number.

It is not a de Polignac number, because 1296706117673 - 2²⁸ = 1296437682217 is a prime.

It is a super-2 number, since 2×1296706117673² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1296706177673) 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, 648353058836 + 648353058837.

It is an arithmetic number, because the mean of its divisors is an integer number (648353058837).

Almost surely, 2^{1296706117673} is an apocalyptic number.

It is an amenable number.

1296706117673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296706117673 is an equidigital number, since it uses as much as digits as its factorization.

1296706117673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000752, while the sum is 56.

The spelling of 1296706117673 in words is "one trillion, two hundred ninety-six billion, seven hundred six million, one hundred seventeen thousand, six hundred seventy-three".