249135270173 has 2 divisors, whose sum is σ = 249135270174. Its totient is φ = 249135270172.

The previous prime is 249135270161. The next prime is 249135270239. The reversal of 249135270173 is 371072531942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147668812729 + 101466457444 = 384277^2 + 318538^2 .

It is a cyclic number.

It is not a de Polignac number, because 249135270173 - 2⁸ = 249135269917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249135270073) 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, 124567635086 + 124567635087.

It is an arithmetic number, because the mean of its divisors is an integer number (124567635087).

Almost surely, 2^249135270173 is an apocalyptic number.

It is an amenable number.

249135270173 is a deficient number, since it is larger than the sum of its proper divisors (1).

249135270173 is an equidigital number, since it uses as much as digits as its factorization.

249135270173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 249135270173 in words is "two hundred forty-nine billion, one hundred thirty-five million, two hundred seventy thousand, one hundred seventy-three".