1304755077817 has 2 divisors, whose sum is σ = 1304755077818. Its totient is φ = 1304755077816.

The previous prime is 1304755077779. The next prime is 1304755077907. The reversal of 1304755077817 is 7187705574031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 821541019321 + 483214058496 = 906389^2 + 695136^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304755077817 - 2²³ = 1304746689209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1304755077217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652377538908 + 652377538909.

It is an arithmetic number, because the mean of its divisors is an integer number (652377538909).

Almost surely, 2^{1304755077817} is an apocalyptic number.

It is an amenable number.

1304755077817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304755077817 is an equidigital number, since it uses as much as digits as its factorization.

1304755077817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5762400, while the sum is 55.

The spelling of 1304755077817 in words is "one trillion, three hundred four billion, seven hundred fifty-five million, seventy-seven thousand, eight hundred seventeen".