11959488817 has 2 divisors, whose sum is σ = 11959488818. Its totient is φ = 11959488816.

The previous prime is 11959488787. The next prime is 11959488857. The reversal of 11959488817 is 71888495911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11143758096 + 815730721 = 105564^2 + 28561^2 .

It is a cyclic number.

It is not a de Polignac number, because 11959488817 - 2¹¹ = 11959486769 is a prime.

It is not a weakly prime, because it can be changed into another prime (11959488857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5979744408 + 5979744409.

It is an arithmetic number, because the mean of its divisors is an integer number (5979744409).

Almost surely, 2^11959488817 is an apocalyptic number.

It is an amenable number.

11959488817 is a deficient number, since it is larger than the sum of its proper divisors (1).

11959488817 is an equidigital number, since it uses as much as digits as its factorization.

11959488817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 61.

The spelling of 11959488817 in words is "eleven billion, nine hundred fifty-nine million, four hundred eighty-eight thousand, eight hundred seventeen".