1273385084017 has 2 divisors, whose sum is σ = 1273385084018. Its totient is φ = 1273385084016.

The previous prime is 1273385084011. The next prime is 1273385084053. The reversal of 1273385084017 is 7104805833721.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1248495604321 + 24889479696 = 1117361^2 + 157764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1273385084017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1273385084011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636692542008 + 636692542009.

It is an arithmetic number, because the mean of its divisors is an integer number (636692542009).

Almost surely, 2^{1273385084017} is an apocalyptic number.

It is an amenable number.

1273385084017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1273385084017 is an equidigital number, since it uses as much as digits as its factorization.

1273385084017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 1273385084017 in words is "one trillion, two hundred seventy-three billion, three hundred eighty-five million, eighty-four thousand, seventeen".