118566685440 has 720 divisors, whose sum is σ = 506013032448. Its totient is φ = 25919004672.

The previous prime is 118566685429. The next prime is 118566685603. The reversal of 118566685440 is 44586665811.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 16688929 + ... + 16696031.

Almost surely, 2^118566685440 is an apocalyptic number.

118566685440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118566685440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253006516224).

118566685440 is an abundant number, since it is smaller than the sum of its proper divisors (387446347008).

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

118566685440 is an equidigital number, since it uses as much as digits as its factorization.

118566685440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7166 (or 7143 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 118566685440 in words is "one hundred eighteen billion, five hundred sixty-six million, six hundred eighty-five thousand, four hundred forty".