268560989173 has 2 divisors, whose sum is σ = 268560989174. Its totient is φ = 268560989172.

The previous prime is 268560989161. The next prime is 268560989219. The reversal of 268560989173 is 371989065862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249753061009 + 18807928164 = 499753^2 + 137142^2 .

It is a cyclic number.

It is not a de Polignac number, because 268560989173 - 2³⁷ = 131122035701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268560929173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134280494586 + 134280494587.

It is an arithmetic number, because the mean of its divisors is an integer number (134280494587).

Almost surely, 2^268560989173 is an apocalyptic number.

It is an amenable number.

268560989173 is a deficient number, since it is larger than the sum of its proper divisors (1).

268560989173 is an equidigital number, since it uses as much as digits as its factorization.

268560989173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 268560989173 in words is "two hundred sixty-eight billion, five hundred sixty million, nine hundred eighty-nine thousand, one hundred seventy-three".