118313920555 has 4 divisors (see below), whose sum is σ = 141976704672. Its totient is φ = 94651136440.

The previous prime is 118313920553. The next prime is 118313920561. The reversal of 118313920555 is 555029313811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555029313811 = 7 ⋅79289901973.

It is not a de Polignac number, because 118313920555 - 2¹ = 118313920553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118313920553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11831392051 + ... + 11831392060.

It is an arithmetic number, because the mean of its divisors is an integer number (35494176168).

Almost surely, 2^118313920555 is an apocalyptic number.

118313920555 is a deficient number, since it is larger than the sum of its proper divisors (23662784117).

118313920555 is an equidigital number, since it uses as much as digits as its factorization.

118313920555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23662784116.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 118313920555 in words is "one hundred eighteen billion, three hundred thirteen million, nine hundred twenty thousand, five hundred fifty-five".