115728672161 has 2 divisors, whose sum is σ = 115728672162. Its totient is φ = 115728672160.

The previous prime is 115728672089. The next prime is 115728672173. The reversal of 115728672161 is 161276827511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100641217600 + 15087454561 = 317240^2 + 122831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115728672161 is a prime.

It is not a weakly prime, because it can be changed into another prime (115728677161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57864336080 + 57864336081.

It is an arithmetic number, because the mean of its divisors is an integer number (57864336081).

Almost surely, 2^115728672161 is an apocalyptic number.

It is an amenable number.

115728672161 is a deficient number, since it is larger than the sum of its proper divisors (1).

115728672161 is an equidigital number, since it uses as much as digits as its factorization.

115728672161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 47.

The spelling of 115728672161 in words is "one hundred fifteen billion, seven hundred twenty-eight million, six hundred seventy-two thousand, one hundred sixty-one".