71000634191 has 2 divisors, whose sum is σ = 71000634192. Its totient is φ = 71000634190.

The previous prime is 71000634151. The next prime is 71000634227. The reversal of 71000634191 is 19143600017.

It is a strong prime.

It is an emirp because it is prime and its reverse (19143600017) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71000634191 - 2¹⁰ = 71000633167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71000634121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35500317095 + 35500317096.

It is an arithmetic number, because the mean of its divisors is an integer number (35500317096).

Almost surely, 2^71000634191 is an apocalyptic number.

71000634191 is a deficient number, since it is larger than the sum of its proper divisors (1).

71000634191 is an equidigital number, since it uses as much as digits as its factorization.

71000634191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 71000634191 in words is "seventy-one billion, six hundred thirty-four thousand, one hundred ninety-one".