1297170612989 has 2 divisors, whose sum is σ = 1297170612990. Its totient is φ = 1297170612988.

The previous prime is 1297170612893. The next prime is 1297170613027. The reversal of 1297170612989 is 9892160717921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1291273140964 + 5897472025 = 1136342^2 + 76795^2 .

It is an emirp because it is prime and its reverse (9892160717921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1297170612989 - 2¹² = 1297170608893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297170612589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648585306494 + 648585306495.

It is an arithmetic number, because the mean of its divisors is an integer number (648585306495).

Almost surely, 2^{1297170612989} is an apocalyptic number.

It is an amenable number.

1297170612989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297170612989 is an equidigital number, since it uses as much as digits as its factorization.

1297170612989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6858432, while the sum is 62.

The spelling of 1297170612989 in words is "one trillion, two hundred ninety-seven billion, one hundred seventy million, six hundred twelve thousand, nine hundred eighty-nine".