118305367281 has 6 divisors (see below), whose sum is σ = 170885530530. Its totient is φ = 78870244848.

The previous prime is 118305367253. The next prime is 118305367361. The reversal of 118305367281 is 182763503811.

It is a happy number.

118305367281 is a `hidden beast` number, since 1 + 1 + 8 + 3 + 0 + 5 + 367 + 281 = 666.

It can be written as a sum of positive squares in only one way, i.e., 80537331681 + 37768035600 = 283791^2 + 194340^2 .

It is not a de Polignac number, because 118305367281 - 2¹⁵ = 118305334513 is a prime.

It is a super-2 number, since 2×118305367281² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118305367241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6572520396 + ... + 6572520413.

It is an arithmetic number, because the mean of its divisors is an integer number (28480921755).

Almost surely, 2^118305367281 is an apocalyptic number.

It is an amenable number.

118305367281 is a deficient number, since it is larger than the sum of its proper divisors (52580163249).

118305367281 is a wasteful number, since it uses less digits than its factorization.

118305367281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13145040815 (or 13145040812 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 118305367281 in words is "one hundred eighteen billion, three hundred five million, three hundred sixty-seven thousand, two hundred eighty-one".