118381821100 has 36 divisors (see below), whose sum is σ = 268057624464. Its totient is φ = 45293913280.

The previous prime is 118381821073. The next prime is 118381821119. The reversal of 118381821100 is 1128183811.

118381821100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25732879 + ... + 25737478.

It is an arithmetic number, because the mean of its divisors is an integer number (7446045124).

Almost surely, 2^118381821100 is an apocalyptic number.

118381821100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118381821100 is an abundant number, since it is smaller than the sum of its proper divisors (149675803364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118381821100 is a wasteful number, since it uses less digits than its factorization.

118381821100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51470394 (or 51470387 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 34.

The spelling of 118381821100 in words is "one hundred eighteen billion, three hundred eighty-one million, eight hundred twenty-one thousand, one hundred".