71085765327870 has 16 divisors (see below), whose sum is σ = 170605836786960. Its totient is φ = 18956204087424.

The previous prime is 71085765327859. The next prime is 71085765327917. The reversal of 71085765327870 is 7872356758017.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1184762755435 + ... + 1184762755494.

It is an arithmetic number, because the mean of its divisors is an integer number (10662864799185).

Almost surely, 2^{71085765327870} is an apocalyptic number.

71085765327870 is an abundant number, since it is smaller than the sum of its proper divisors (99520071459090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71085765327870 is a wasteful number, since it uses less digits than its factorization.

71085765327870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369525510939.

The product of its (nonzero) digits is 138297600, while the sum is 66.

The spelling of 71085765327870 in words is "seventy-one trillion, eighty-five billion, seven hundred sixty-five million, three hundred twenty-seven thousand, eight hundred seventy".