1306261970833 has 2 divisors, whose sum is σ = 1306261970834. Its totient is φ = 1306261970832.

The previous prime is 1306261970801. The next prime is 1306261970843. The reversal of 1306261970833 is 3380791626031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1001064283024 + 305197687809 = 1000532^2 + 552447^2 .

It is an emirp because it is prime and its reverse (3380791626031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1306261970833 - 2⁵ = 1306261970801 is a prime.

It is not a weakly prime, because it can be changed into another prime (1306261970843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653130985416 + 653130985417.

It is an arithmetic number, because the mean of its divisors is an integer number (653130985417).

Almost surely, 2^{1306261970833} is an apocalyptic number.

It is an amenable number.

1306261970833 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306261970833 is an equidigital number, since it uses as much as digits as its factorization.

1306261970833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 49.

The spelling of 1306261970833 in words is "one trillion, three hundred six billion, two hundred sixty-one million, nine hundred seventy thousand, eight hundred thirty-three".