71040864840086 has 16 divisors (see below), whose sum is σ = 112873358366640. Its totient is φ = 33418032403200.

The previous prime is 71040864840073. The next prime is 71040864840149. The reversal of 71040864840086 is 68004846804017.

It is a happy number.

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, 404999015 + ... + 405174386.

It is an arithmetic number, because the mean of its divisors is an integer number (7054584897915).

Almost surely, 2^{71040864840086} is an apocalyptic number.

71040864840086 is a deficient number, since it is larger than the sum of its proper divisors (41832493526554).

71040864840086 is a wasteful number, since it uses less digits than its factorization.

71040864840086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810175999.

The product of its (nonzero) digits is 8257536, while the sum is 56.

The spelling of 71040864840086 in words is "seventy-one trillion, forty billion, eight hundred sixty-four million, eight hundred forty thousand, eighty-six".