115856891243 has 8 divisors (see below), whose sum is σ = 121776589728. Its totient is φ = 110010729664.

The previous prime is 115856891209. The next prime is 115856891273. The reversal of 115856891243 is 342198658511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115856891243 - 2³⁰ = 114783149419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115856891273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18380996 + ... + 18387297.

It is an arithmetic number, because the mean of its divisors is an integer number (15222073716).

Almost surely, 2^115856891243 is an apocalyptic number.

115856891243 is a deficient number, since it is larger than the sum of its proper divisors (5919698485).

115856891243 is a wasteful number, since it uses less digits than its factorization.

115856891243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36768453.

The product of its digits is 2073600, while the sum is 53.

The spelling of 115856891243 in words is "one hundred fifteen billion, eight hundred fifty-six million, eight hundred ninety-one thousand, two hundred forty-three".