118678210819 has 4 divisors (see below), whose sum is σ = 135632240944. Its totient is φ = 101724180696.

The previous prime is 118678210759. The next prime is 118678210843. The reversal of 118678210819 is 918012876811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 918012876811 = 41 ⋅22390557971.

It is a cyclic number.

It is not a de Polignac number, because 118678210819 - 2⁷ = 118678210691 is a prime.

It is a super-2 number, since 2×118678210819² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118678210619) 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, 8477015052 + ... + 8477015065.

It is an arithmetic number, because the mean of its divisors is an integer number (33908060236).

Almost surely, 2^118678210819 is an apocalyptic number.

118678210819 is a deficient number, since it is larger than the sum of its proper divisors (16954030125).

118678210819 is an equidigital number, since it uses as much as digits as its factorization.

118678210819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16954030124.

The product of its (nonzero) digits is 387072, while the sum is 52.

The spelling of 118678210819 in words is "one hundred eighteen billion, six hundred seventy-eight million, two hundred ten thousand, eight hundred nineteen".