118509273309 has 16 divisors (see below), whose sum is σ = 183646333440. Its totient is φ = 66571794480.

The previous prime is 118509273301. The next prime is 118509273317. The reversal of 118509273309 is 903372905811.

It is an interprime number because it is at equal distance from previous prime (118509273301) and next prime (118509273317).

It is not a de Polignac number, because 118509273309 - 2³ = 118509273301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118509273301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47823327 + ... + 47825804.

It is an arithmetic number, because the mean of its divisors is an integer number (11477895840).

Almost surely, 2^118509273309 is an apocalyptic number.

It is an amenable number.

118509273309 is a deficient number, since it is larger than the sum of its proper divisors (65137060131).

118509273309 is an equidigital number, since it uses as much as digits as its factorization.

118509273309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95649200.

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 118509273309 in words is "one hundred eighteen billion, five hundred nine million, two hundred seventy-three thousand, three hundred nine".