118708500681 has 9 divisors (see below), whose sum is σ = 171469327341. Its totient is φ = 79138311372.

The previous prime is 118708500679. The next prime is 118708500719. The reversal of 118708500681 is 186005807811.

The square root of 118708500681 is 344541.

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

118708500681 is a `hidden beast` number, since 1 + 1 + 87 + 0 + 8 + 500 + 68 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 118708500681 - 2¹ = 118708500679 is a prime.

It is a super-2 number, since 2×118708500681² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (118708500641) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 976200 + ... + 1091046.

Almost surely, 2^118708500681 is an apocalyptic number.

118708500681 is the 344541-st square number.

118708500681 is the 172271-st centered octagonal number.

It is an amenable number.

118708500681 is a deficient number, since it is larger than the sum of its proper divisors (52760826660).

118708500681 is an frugal number, since it uses more digits than its factorization.

118708500681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229700 (or 114850 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 45.

The spelling of 118708500681 in words is "one hundred eighteen billion, seven hundred eight million, five hundred thousand, six hundred eighty-one".