115165728149 has 4 divisors (see below), whose sum is σ = 121940182764. Its totient is φ = 108391273536.

The previous prime is 115165728137. The next prime is 115165728173. The reversal of 115165728149 is 941827561511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47145436900 + 68020291249 = 217130^2 + 260807^2 .

It is a cyclic number.

It is not a de Polignac number, because 115165728149 - 2⁸ = 115165727893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115165728097 and 115165728106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115165728649) 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, 3387227282 + ... + 3387227315.

It is an arithmetic number, because the mean of its divisors is an integer number (30485045691).

Almost surely, 2^115165728149 is an apocalyptic number.

It is an amenable number.

115165728149 is a deficient number, since it is larger than the sum of its proper divisors (6774454615).

115165728149 is an equidigital number, since it uses as much as digits as its factorization.

115165728149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774454614.

The product of its digits is 604800, while the sum is 50.

The spelling of 115165728149 in words is "one hundred fifteen billion, one hundred sixty-five million, seven hundred twenty-eight thousand, one hundred forty-nine".