87879573589 has 2 divisors, whose sum is σ = 87879573590. Its totient is φ = 87879573588.

The previous prime is 87879573563. The next prime is 87879573631. The reversal of 87879573589 is 98537597878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87081059025 + 798514564 = 295095^2 + 28258^2 .

It is a cyclic number.

It is not a de Polignac number, because 87879573589 - 2¹⁵ = 87879540821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87879573539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43939786794 + 43939786795.

It is an arithmetic number, because the mean of its divisors is an integer number (43939786795).

Almost surely, 2^87879573589 is an apocalyptic number.

It is an amenable number.

87879573589 is a deficient number, since it is larger than the sum of its proper divisors (1).

87879573589 is an equidigital number, since it uses as much as digits as its factorization.

87879573589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1066867200, while the sum is 76.

The spelling of 87879573589 in words is "eighty-seven billion, eight hundred seventy-nine million, five hundred seventy-three thousand, five hundred eighty-nine".