5273643444409 has 2 divisors, whose sum is σ = 5273643444410. Its totient is φ = 5273643444408.

The previous prime is 5273643444389. The next prime is 5273643444427. The reversal of 5273643444409 is 9044443463725.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4432519676025 + 841123768384 = 2105355^2 + 917128^2 .

It is a cyclic number.

It is not a de Polignac number, because 5273643444409 - 2²⁷ = 5273509226681 is a prime.

It is a super-2 number, since 2×5273643444409² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5273643444409.

It is not a weakly prime, because it can be changed into another prime (5273643444439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2636821722204 + 2636821722205.

It is an arithmetic number, because the mean of its divisors is an integer number (2636821722205).

Almost surely, 2^{5273643444409} is an apocalyptic number.

It is an amenable number.

5273643444409 is a deficient number, since it is larger than the sum of its proper divisors (1).

5273643444409 is an equidigital number, since it uses as much as digits as its factorization.

5273643444409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34836480, while the sum is 55.

The spelling of 5273643444409 in words is "five trillion, two hundred seventy-three billion, six hundred forty-three million, four hundred forty-four thousand, four hundred nine".