71717943407078 has 32 divisors (see below), whose sum is σ = 108329632481280. Its totient is φ = 35608891943520.

The previous prime is 71717943407051. The next prime is 71717943407177. The reversal of 71717943407078 is 87070434971717.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1884963851 + ... + 1885001897.

It is an arithmetic number, because the mean of its divisors is an integer number (3385301015040).

Almost surely, 2^{71717943407078} is an apocalyptic number.

71717943407078 is a deficient number, since it is larger than the sum of its proper divisors (36611689074202).

71717943407078 is a wasteful number, since it uses less digits than its factorization.

71717943407078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48732.

The product of its (nonzero) digits is 58084992, while the sum is 65.

The spelling of 71717943407078 in words is "seventy-one trillion, seven hundred seventeen billion, nine hundred forty-three million, four hundred seven thousand, seventy-eight".