71040864840085 has 24 divisors (see below), whose sum is σ = 101277189527040. Its totient is φ = 47677273416864.

The previous prime is 71040864840073. The next prime is 71040864840149. The reversal of 71040864840085 is 58004846804017.

It is not a de Polignac number, because 71040864840085 - 2³⁹ = 70491109026197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3084698205 + ... + 3084721234.

It is an arithmetic number, because the mean of its divisors is an integer number (4219882896960).

Almost surely, 2^{71040864840085} is an apocalyptic number.

It is an amenable number.

71040864840085 is a deficient number, since it is larger than the sum of its proper divisors (30236324686955).

71040864840085 is a wasteful number, since it uses less digits than its factorization.

71040864840085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6169419505 (or 6169419498 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 55.

The spelling of 71040864840085 in words is "seventy-one trillion, forty billion, eight hundred sixty-four million, eight hundred forty thousand, eighty-five".