115985238721 has 8 divisors (see below), whose sum is σ = 126533584800. Its totient is φ = 105437598240.

The previous prime is 115985238713. The next prime is 115985238727. The reversal of 115985238721 is 127832589511.

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 115985238721 - 2³ = 115985238713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115985238727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202750 + ... + 522568.

It is an arithmetic number, because the mean of its divisors is an integer number (15816698100).

Almost surely, 2^115985238721 is an apocalyptic number.

115985238721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115985238721 is a deficient number, since it is larger than the sum of its proper divisors (10548346079).

115985238721 is a wasteful number, since it uses less digits than its factorization.

115985238721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352799.

The product of its digits is 1209600, while the sum is 52.

The spelling of 115985238721 in words is "one hundred fifteen billion, nine hundred eighty-five million, two hundred thirty-eight thousand, seven hundred twenty-one".