115591871092 has 18 divisors (see below), whose sum is σ = 203589225042. Its totient is φ = 57423575664.

The previous prime is 115591871063. The next prime is 115591871113. The reversal of 115591871092 is 290178195511.

It can be written as a sum of positive squares in only one way, i.e., 89086728676 + 26505142416 = 298474^2 + 162804^2 .

It is a super-3 number, since 3×115591871092³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8513293 + ... + 8526859.

Almost surely, 2^115591871092 is an apocalyptic number.

It is an amenable number.

115591871092 is a deficient number, since it is larger than the sum of its proper divisors (87997353950).

115591871092 is an frugal number, since it uses more digits than its factorization.

115591871092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27295 (or 13726 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 49.

The spelling of 115591871092 in words is "one hundred fifteen billion, five hundred ninety-one million, eight hundred seventy-one thousand, ninety-two".