118613686405 has 4 divisors (see below), whose sum is σ = 142336423692. Its totient is φ = 94890949120.

The previous prime is 118613686349. The next prime is 118613686409. The reversal of 118613686405 is 504686316811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94056915969 + 24556770436 = 306687^2 + 156706^2 .

It is not a de Polignac number, because 118613686405 - 2¹⁹ = 118613162117 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118613686409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11861368636 + ... + 11861368645.

It is an arithmetic number, because the mean of its divisors is an integer number (35584105923).

Almost surely, 2^118613686405 is an apocalyptic number.

It is an amenable number.

118613686405 is a deficient number, since it is larger than the sum of its proper divisors (23722737287).

118613686405 is an equidigital number, since it uses as much as digits as its factorization.

118613686405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23722737286.

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 118613686405 in words is "one hundred eighteen billion, six hundred thirteen million, six hundred eighty-six thousand, four hundred five".