11816413993 has 2 divisors, whose sum is σ = 11816413994. Its totient is φ = 11816413992.

The previous prime is 11816413981. The next prime is 11816414021. The reversal of 11816413993 is 39931461811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10263108249 + 1553305744 = 101307^2 + 39412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11816413993 is a prime.

It is not a weakly prime, because it can be changed into another prime (11816413963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5908206996 + 5908206997.

It is an arithmetic number, because the mean of its divisors is an integer number (5908206997).

Almost surely, 2^11816413993 is an apocalyptic number.

It is an amenable number.

11816413993 is a deficient number, since it is larger than the sum of its proper divisors (1).

11816413993 is an equidigital number, since it uses as much as digits as its factorization.

11816413993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 46.

The spelling of 11816413993 in words is "eleven billion, eight hundred sixteen million, four hundred thirteen thousand, nine hundred ninety-three".