118855817990 has 64 divisors (see below), whose sum is σ = 269733663360. Its totient is φ = 36698434560.

The previous prime is 118855817987. The next prime is 118855817999. The reversal of 118855817990 is 99718558811.

118855817990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118855817999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1555505 + ... + 1630124.

It is an arithmetic number, because the mean of its divisors is an integer number (4214588490).

Almost surely, 2^118855817990 is an apocalyptic number.

118855817990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

118855817990 is an abundant number, since it is smaller than the sum of its proper divisors (150877845370).

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

118855817990 is a wasteful number, since it uses less digits than its factorization.

118855817990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185697.

The product of its (nonzero) digits is 7257600, while the sum is 62.

The spelling of 118855817990 in words is "one hundred eighteen billion, eight hundred fifty-five million, eight hundred seventeen thousand, nine hundred ninety".