115891864125 has 32 divisors (see below), whose sum is σ = 196005478656. Its totient is φ = 60795720000.

The previous prime is 115891864111. The next prime is 115891864129. The reversal of 115891864125 is 521468198511.

It is a happy number.

It is not a de Polignac number, because 115891864125 - 2⁹ = 115891863613 is a prime.

It is a super-3 number, since 3×115891864125³ (a number of 34 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115891864129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2510281 + ... + 2556030.

It is an arithmetic number, because the mean of its divisors is an integer number (6125171208).

Almost surely, 2^115891864125 is an apocalyptic number.

115891864125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115891864125 is a deficient number, since it is larger than the sum of its proper divisors (80113614531).

115891864125 is an equidigital number, since it uses as much as digits as its factorization.

115891864125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5066390 (or 5066380 counting only the distinct ones).

The product of its digits is 691200, while the sum is 51.

The spelling of 115891864125 in words is "one hundred fifteen billion, eight hundred ninety-one million, eight hundred sixty-four thousand, one hundred twenty-five".