873661047529 has 2 divisors, whose sum is σ = 873661047530. Its totient is φ = 873661047528.

The previous prime is 873661047521. The next prime is 873661047563. The reversal of 873661047529 is 925740166378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 855898821904 + 17762225625 = 925148^2 + 133275^2 .

It is a cyclic number.

It is not a de Polignac number, because 873661047529 - 2³ = 873661047521 is a prime.

It is not a weakly prime, because it can be changed into another prime (873661047521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436830523764 + 436830523765.

It is an arithmetic number, because the mean of its divisors is an integer number (436830523765).

It is a 1-persistent number, because it is pandigital, but 2⋅873661047529 = 1747322095058 is not.

Almost surely, 2^873661047529 is an apocalyptic number.

It is an amenable number.

873661047529 is a deficient number, since it is larger than the sum of its proper divisors (1).

873661047529 is an equidigital number, since it uses as much as digits as its factorization.

873661047529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 873661047529 in words is "eight hundred seventy-three billion, six hundred sixty-one million, forty-seven thousand, five hundred twenty-nine".