118181589600 has 72 divisors (see below), whose sum is σ = 384681081960. Its totient is φ = 31515089920.

The previous prime is 118181589599. The next prime is 118181589607. The reversal of 118181589600 is 6985181811.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 118181589600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118181589607) 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 11 ways as a sum of consecutive naturals, for example, 24618765 + ... + 24623564.

It is an arithmetic number, because the mean of its divisors is an integer number (5342792805).

Almost surely, 2^118181589600 is an apocalyptic number.

118181589600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118181589600 is an abundant number, since it is smaller than the sum of its proper divisors (266499492360).

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

118181589600 is a wasteful number, since it uses less digits than its factorization.

118181589600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49242352 (or 49242339 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 48.

The spelling of 118181589600 in words is "one hundred eighteen billion, one hundred eighty-one million, five hundred eighty-nine thousand, six hundred".