1309797020033 has 2 divisors, whose sum is σ = 1309797020034. Its totient is φ = 1309797020032.

The previous prime is 1309797019991. The next prime is 1309797020047. The reversal of 1309797020033 is 3300207979031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1308353931889 + 1443088144 = 1143833^2 + 37988^2 .

It is a cyclic number.

It is not a de Polignac number, because 1309797020033 - 2²⁰ = 1309795971457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1309797020083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654898510016 + 654898510017.

It is an arithmetic number, because the mean of its divisors is an integer number (654898510017).

Almost surely, 2^{1309797020033} is an apocalyptic number.

It is an amenable number.

1309797020033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1309797020033 is an equidigital number, since it uses as much as digits as its factorization.

1309797020033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 214326, while the sum is 44.

The spelling of 1309797020033 in words is "one trillion, three hundred nine billion, seven hundred ninety-seven million, twenty thousand, thirty-three".