118363391999 has 4 divisors (see below), whose sum is σ = 118364468280. Its totient is φ = 118362315720.

The previous prime is 118363391983. The next prime is 118363392001. The reversal of 118363391999 is 999193363811.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 999193363811 = 739 ⋅1352088449.

It is a cyclic number.

It is not a de Polignac number, because 118363391999 - 2⁴ = 118363391983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118363393999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351632 + ... + 600309.

It is an arithmetic number, because the mean of its divisors is an integer number (29591117070).

Almost surely, 2^118363391999 is an apocalyptic number.

118363391999 is a deficient number, since it is larger than the sum of its proper divisors (1076281).

118363391999 is an equidigital number, since it uses as much as digits as its factorization.

118363391999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076280.

The product of its digits is 8503056, while the sum is 62.

The spelling of 118363391999 in words is "one hundred eighteen billion, three hundred sixty-three million, three hundred ninety-one thousand, nine hundred ninety-nine".