115165728138 has 8 divisors (see below), whose sum is σ = 230331456288. Its totient is φ = 38388576044.

The previous prime is 115165728137. The next prime is 115165728173. The reversal of 115165728138 is 831827561511.

It is a happy number.

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

115165728138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (115165728137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9597144006 + ... + 9597144017.

It is an arithmetic number, because the mean of its divisors is an integer number (28791432036).

Almost surely, 2^115165728138 is an apocalyptic number.

115165728138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115165728138 is a wasteful number, since it uses less digits than its factorization.

115165728138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19194288028.

The product of its digits is 403200, while the sum is 48.

The spelling of 115165728138 in words is "one hundred fifteen billion, one hundred sixty-five million, seven hundred twenty-eight thousand, one hundred thirty-eight".