873191365993 has 2 divisors, whose sum is σ = 873191365994. Its totient is φ = 873191365992.

The previous prime is 873191365933. The next prime is 873191365997. The reversal of 873191365993 is 399563191378.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 818359055424 + 54832310569 = 904632^2 + 234163^2 .

It is a cyclic number.

It is not a de Polignac number, because 873191365993 - 2²⁹ = 872654495081 is a prime.

It is not a weakly prime, because it can be changed into another prime (873191365997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436595682996 + 436595682997.

It is an arithmetic number, because the mean of its divisors is an integer number (436595682997).

Almost surely, 2^873191365993 is an apocalyptic number.

It is an amenable number.

873191365993 is a deficient number, since it is larger than the sum of its proper divisors (1).

873191365993 is an equidigital number, since it uses as much as digits as its factorization.

873191365993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33067440, while the sum is 64.

The spelling of 873191365993 in words is "eight hundred seventy-three billion, one hundred ninety-one million, three hundred sixty-five thousand, nine hundred ninety-three".