118187438656 has 105 divisors (see below), whose sum is σ = 273912280089. Its totient is φ = 50594003712.

The previous prime is 118187438623. The next prime is 118187438711. The reversal of 118187438656 is 656834781811.

The square root of 118187438656 is 343784.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 99578113600 + 18609325056 = 315560^2 + 136416^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 118187438656.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 134762890 + ... + 134763766.

Almost surely, 2^118187438656 is an apocalyptic number.

118187438656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

118187438656 is the 343784-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118187438656

118187438656 is an abundant number, since it is smaller than the sum of its proper divisors (155724841433).

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

118187438656 is an frugal number, since it uses more digits than its factorization.

118187438656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794 (or 886 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 58.

The spelling of 118187438656 in words is "one hundred eighteen billion, one hundred eighty-seven million, four hundred thirty-eight thousand, six hundred fifty-six".