7181245963117 has 2 divisors, whose sum is σ = 7181245963118. Its totient is φ = 7181245963116.

The previous prime is 7181245963109. The next prime is 7181245963127. The reversal of 7181245963117 is 7113695421817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3954872006596 + 3226373956521 = 1988686^2 + 1796211^2 .

It is an emirp because it is prime and its reverse (7113695421817) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7181245963117 - 2³ = 7181245963109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7181245963127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3590622981558 + 3590622981559.

It is an arithmetic number, because the mean of its divisors is an integer number (3590622981559).

Almost surely, 2^{7181245963117} is an apocalyptic number.

It is an amenable number.

7181245963117 is a deficient number, since it is larger than the sum of its proper divisors (1).

7181245963117 is an equidigital number, since it uses as much as digits as its factorization.

7181245963117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 55.

The spelling of 7181245963117 in words is "seven trillion, one hundred eighty-one billion, two hundred forty-five million, nine hundred sixty-three thousand, one hundred seventeen".