118389137508 has 72 divisors (see below), whose sum is σ = 316780464000. Its totient is φ = 37216138176.

The previous prime is 118389137467. The next prime is 118389137527. The reversal of 118389137508 is 805731983811.

It is a happy number.

118389137508 is a `hidden beast` number, since 1 + 18 + 3 + 8 + 91 + 37 + 508 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1273708 + ... + 1363491.

Almost surely, 2^118389137508 is an apocalyptic number.

118389137508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

118389137508 is an abundant number, since it is smaller than the sum of its proper divisors (198391326492).

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

118389137508 is a wasteful number, since it uses less digits than its factorization.

118389137508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637281 (or 2637276 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The spelling of 118389137508 in words is "one hundred eighteen billion, three hundred eighty-nine million, one hundred thirty-seven thousand, five hundred eight".