8728571585873 has 2 divisors, whose sum is σ = 8728571585874. Its totient is φ = 8728571585872.

The previous prime is 8728571585869. The next prime is 8728571585891. The reversal of 8728571585873 is 3785851758278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8606290587904 + 122280997969 = 2933648^2 + 349687^2 .

It is a cyclic number.

It is not a de Polignac number, because 8728571585873 - 2² = 8728571585869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8728571585873.

It is not a weakly prime, because it can be changed into another prime (8728571585803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4364285792936 + 4364285792937.

It is an arithmetic number, because the mean of its divisors is an integer number (4364285792937).

Almost surely, 2^{8728571585873} is an apocalyptic number.

It is an amenable number.

8728571585873 is a deficient number, since it is larger than the sum of its proper divisors (1).

8728571585873 is an equidigital number, since it uses as much as digits as its factorization.

8728571585873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1053696000, while the sum is 74.

The spelling of 8728571585873 in words is "eight trillion, seven hundred twenty-eight billion, five hundred seventy-one million, five hundred eighty-five thousand, eight hundred seventy-three".