7243745133217 has 2 divisors, whose sum is σ = 7243745133218. Its totient is φ = 7243745133216.

The previous prime is 7243745133047. The next prime is 7243745133299. The reversal of 7243745133217 is 7123315473427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6570834996496 + 672910136721 = 2563364^2 + 820311^2 .

It is a cyclic number.

It is not a de Polignac number, because 7243745133217 - 2²³ = 7243736744609 is a prime.

It is not a weakly prime, because it can be changed into another prime (7243745133617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3621872566608 + 3621872566609.

It is an arithmetic number, because the mean of its divisors is an integer number (3621872566609).

Almost surely, 2^{7243745133217} is an apocalyptic number.

It is an amenable number.

7243745133217 is a deficient number, since it is larger than the sum of its proper divisors (1).

7243745133217 is an equidigital number, since it uses as much as digits as its factorization.

7243745133217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2963520, while the sum is 49.

The spelling of 7243745133217 in words is "seven trillion, two hundred forty-three billion, seven hundred forty-five million, one hundred thirty-three thousand, two hundred seventeen".