115660006543 has 4 divisors (see below), whose sum is σ = 119390974528. Its totient is φ = 111929038560.

The previous prime is 115660006531. The next prime is 115660006559. The reversal of 115660006543 is 345600066511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345600066511 = 7 ⋅49371438073.

It is a cyclic number.

It is not a de Polignac number, because 115660006543 - 2²⁵ = 115626452111 is a prime.

It is a super-3 number, since 3×115660006543³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115660016543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1865483946 + ... + 1865484007.

It is an arithmetic number, because the mean of its divisors is an integer number (29847743632).

Almost surely, 2^115660006543 is an apocalyptic number.

115660006543 is a deficient number, since it is larger than the sum of its proper divisors (3730967985).

115660006543 is an equidigital number, since it uses as much as digits as its factorization.

115660006543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730967984.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 115660006543 in words is "one hundred fifteen billion, six hundred sixty million, six thousand, five hundred forty-three".