275509963556473 has 2 divisors, whose sum is σ = 275509963556474. Its totient is φ = 275509963556472.

The previous prime is 275509963556411. The next prime is 275509963556491. The reversal of 275509963556473 is 374655369905572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 268212417804864 + 7297545751609 = 16377192^2 + 2701397^2 .

It is a cyclic number.

It is not a de Polignac number, because 275509963556473 - 2⁹ = 275509963555961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 275509963556473.

It is not a weakly prime, because it can be changed into another prime (275509963550473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137754981778236 + 137754981778237.

It is an arithmetic number, because the mean of its divisors is an integer number (137754981778237).

Almost surely, 2^{275509963556473} is an apocalyptic number.

It is an amenable number.

275509963556473 is a deficient number, since it is larger than the sum of its proper divisors (1).

275509963556473 is an equidigital number, since it uses as much as digits as its factorization.

275509963556473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6429780000, while the sum is 76.

The spelling of 275509963556473 in words is "two hundred seventy-five trillion, five hundred nine billion, nine hundred sixty-three million, five hundred fifty-six thousand, four hundred seventy-three".