116128009 has 2 divisors, whose sum is σ = 116128010. Its totient is φ = 116128008.

The previous prime is 116128007. The next prime is 116128043. The reversal of 116128009 is 900821611.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99440784 + 16687225 = 9972^2 + 4085^2 .

It is a cyclic number.

It is not a de Polignac number, because 116128009 - 2¹ = 116128007 is a prime.

Together with 116128007, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_6633514 and since 116128009 and 6633514 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (116128007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58064004 + 58064005.

It is an arithmetic number, because the mean of its divisors is an integer number (58064005).

Almost surely, 2^116128009 is an apocalyptic number.

It is an amenable number.

116128009 is a deficient number, since it is larger than the sum of its proper divisors (1).

116128009 is an equidigital number, since it uses as much as digits as its factorization.

116128009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 116128009 is about 10776.2706443370. The cubic root of 116128009 is about 487.8792266410.

The spelling of 116128009 in words is "one hundred sixteen million, one hundred twenty-eight thousand, nine".