116186521909 has 2 divisors, whose sum is σ = 116186521910. Its totient is φ = 116186521908.

The previous prime is 116186521883. The next prime is 116186521921. The reversal of 116186521909 is 909125681611.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62105624100 + 54080897809 = 249210^2 + 232553^2 .

It is a cyclic number.

It is not a de Polignac number, because 116186521909 - 2¹⁵ = 116186489141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116186521949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58093260954 + 58093260955.

It is an arithmetic number, because the mean of its divisors is an integer number (58093260955).

Almost surely, 2^116186521909 is an apocalyptic number.

It is an amenable number.

116186521909 is a deficient number, since it is larger than the sum of its proper divisors (1).

116186521909 is an equidigital number, since it uses as much as digits as its factorization.

116186521909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 49.

The spelling of 116186521909 in words is "one hundred sixteen billion, one hundred eighty-six million, five hundred twenty-one thousand, nine hundred nine".