71585786445 has 16 divisors (see below), whose sum is σ = 117632860800. Its totient is φ = 37147218624.

The previous prime is 71585786407. The next prime is 71585786471. The reversal of 71585786445 is 54468758517.

It is not a de Polignac number, because 71585786445 - 2⁷ = 71585786317 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 64491145 + ... + 64492254.

It is an arithmetic number, because the mean of its divisors is an integer number (7352053800).

Almost surely, 2^71585786445 is an apocalyptic number.

It is an amenable number.

71585786445 is a deficient number, since it is larger than the sum of its proper divisors (46047074355).

71585786445 is a wasteful number, since it uses less digits than its factorization.

71585786445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128983444.

The product of its digits is 37632000, while the sum is 60.

The spelling of 71585786445 in words is "seventy-one billion, five hundred eighty-five million, seven hundred eighty-six thousand, four hundred forty-five".