115503803181 has 24 divisors (see below), whose sum is σ = 179802937496. Its totient is φ = 71027694720.

The previous prime is 115503803153. The next prime is 115503803189. The reversal of 115503803181 is 181308305511.

115503803181 is a `hidden beast` number, since 11 + 550 + 3 + 80 + 3 + 18 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3858273225 + 111645529956 = 62115^2 + 334134^2 .

It is not a de Polignac number, because 115503803181 - 2⁶ = 115503803117 is a prime.

It is a super-3 number, since 3×115503803181³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115503803189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195850 + ... + 519003.

Almost surely, 2^115503803181 is an apocalyptic number.

It is an amenable number.

115503803181 is a deficient number, since it is larger than the sum of its proper divisors (64299134315).

115503803181 is a wasteful number, since it uses less digits than its factorization.

115503803181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716253 (or 716250 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The spelling of 115503803181 in words is "one hundred fifteen billion, five hundred three million, eight hundred three thousand, one hundred eighty-one".