115863644173 has 2 divisors, whose sum is σ = 115863644174. Its totient is φ = 115863644172.

The previous prime is 115863644159. The next prime is 115863644209. The reversal of 115863644173 is 371446368511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81757680489 + 34105963684 = 285933^2 + 184678^2 .

It is a cyclic number.

It is not a de Polignac number, because 115863644173 - 2⁹ = 115863643661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115863644123) 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 as a sum of consecutive naturals, namely, 57931822086 + 57931822087.

It is an arithmetic number, because the mean of its divisors is an integer number (57931822087).

Almost surely, 2^115863644173 is an apocalyptic number.

It is an amenable number.

115863644173 is a deficient number, since it is larger than the sum of its proper divisors (1).

115863644173 is an equidigital number, since it uses as much as digits as its factorization.

115863644173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 49.

The spelling of 115863644173 in words is "one hundred fifteen billion, eight hundred sixty-three million, six hundred forty-four thousand, one hundred seventy-three".