87839875805 has 32 divisors (see below), whose sum is σ = 120423621888. Its totient is φ = 60885158400.

The previous prime is 87839875771. The next prime is 87839875813. The reversal of 87839875805 is 50857893878.

It is not a de Polignac number, because 87839875805 - 2¹⁶ = 87839810269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 225065 + ... + 475745.

It is an arithmetic number, because the mean of its divisors is an integer number (3763238184).

Almost surely, 2^87839875805 is an apocalyptic number.

It is an amenable number.

87839875805 is a deficient number, since it is larger than the sum of its proper divisors (32583746083).

87839875805 is a wasteful number, since it uses less digits than its factorization.

87839875805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250997.

The product of its (nonzero) digits is 135475200, while the sum is 68.

The spelling of 87839875805 in words is "eighty-seven billion, eight hundred thirty-nine million, eight hundred seventy-five thousand, eight hundred five".