118542878165 has 8 divisors (see below), whose sum is σ = 142283832120. Its totient is φ = 94812716992.

The previous prime is 118542878107. The next prime is 118542878189. The reversal of 118542878165 is 561878245811.

It can be written as a sum of positive squares in 4 ways, for example, as 916515076 + 117626363089 = 30274^2 + 342967^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 118542878165 - 2²⁶ = 118475769301 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 118542878165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2674010 + ... + 2717979.

It is an arithmetic number, because the mean of its divisors is an integer number (17785479015).

Almost surely, 2^118542878165 is an apocalyptic number.

It is an amenable number.

118542878165 is a deficient number, since it is larger than the sum of its proper divisors (23740953955).

118542878165 is an equidigital number, since it uses as much as digits as its factorization.

118542878165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5396391.

The product of its digits is 4300800, while the sum is 56.

The spelling of 118542878165 in words is "one hundred eighteen billion, five hundred forty-two million, eight hundred seventy-eight thousand, one hundred sixty-five".