118113583138 has 4 divisors (see below), whose sum is σ = 177170374710. Its totient is φ = 59056791568.

The previous prime is 118113583129. The next prime is 118113583139. The reversal of 118113583138 is 831385311811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831385311811 = 136373 ⋅6096407.

It can be written as a sum of positive squares in only one way, i.e., 111841418329 + 6272164809 = 334427^2 + 79197^2 .

It is a junction number, because it is equal to n+sod(n) for n = 118113583094 and 118113583103.

It is not an unprimeable number, because it can be changed into a prime (118113583139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29528395783 + ... + 29528395786.

Almost surely, 2^118113583138 is an apocalyptic number.

118113583138 is a deficient number, since it is larger than the sum of its proper divisors (59056791572).

118113583138 is an equidigital number, since it uses as much as digits as its factorization.

118113583138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59056791571.

The product of its digits is 69120, while the sum is 43.

Adding to 118113583138 its reverse (831385311811), we get a palindrome (949498894949).

The spelling of 118113583138 in words is "one hundred eighteen billion, one hundred thirteen million, five hundred eighty-three thousand, one hundred thirty-eight".