11963123617 has 2 divisors, whose sum is σ = 11963123618. Its totient is φ = 11963123616.

The previous prime is 11963123581. The next prime is 11963123621. The reversal of 11963123617 is 71632136911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10363443601 + 1599680016 = 101801^2 + 39996^2 .

It is a cyclic number.

It is not a de Polignac number, because 11963123617 - 2²⁷ = 11828905889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11963123617.

It is not a weakly prime, because it can be changed into another prime (11963123017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5981561808 + 5981561809.

It is an arithmetic number, because the mean of its divisors is an integer number (5981561809).

Almost surely, 2^11963123617 is an apocalyptic number.

It is an amenable number.

11963123617 is a deficient number, since it is larger than the sum of its proper divisors (1).

11963123617 is an equidigital number, since it uses as much as digits as its factorization.

11963123617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 40.

The spelling of 11963123617 in words is "eleven billion, nine hundred sixty-three million, one hundred twenty-three thousand, six hundred seventeen".