71217534071 has 2 divisors, whose sum is σ = 71217534072. Its totient is φ = 71217534070.

The previous prime is 71217534043. The next prime is 71217534077. The reversal of 71217534071 is 17043571217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71217534071 - 2¹⁸ = 71217271927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71217534077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35608767035 + 35608767036.

It is an arithmetic number, because the mean of its divisors is an integer number (35608767036).

Almost surely, 2^71217534071 is an apocalyptic number.

71217534071 is a deficient number, since it is larger than the sum of its proper divisors (1).

71217534071 is an equidigital number, since it uses as much as digits as its factorization.

71217534071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41160, while the sum is 38.

The spelling of 71217534071 in words is "seventy-one billion, two hundred seventeen million, five hundred thirty-four thousand, seventy-one".