71050824917 has 2 divisors, whose sum is σ = 71050824918. Its totient is φ = 71050824916.

The previous prime is 71050824869. The next prime is 71050824973. The reversal of 71050824917 is 71942805017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69809037796 + 1241787121 = 264214^2 + 35239^2 .

It is a cyclic number.

It is not a de Polignac number, because 71050824917 - 2⁸ = 71050824661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71050824997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35525412458 + 35525412459.

It is an arithmetic number, because the mean of its divisors is an integer number (35525412459).

Almost surely, 2^71050824917 is an apocalyptic number.

It is an amenable number.

71050824917 is a deficient number, since it is larger than the sum of its proper divisors (1).

71050824917 is an equidigital number, since it uses as much as digits as its factorization.

71050824917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 44.

The spelling of 71050824917 in words is "seventy-one billion, fifty million, eight hundred twenty-four thousand, nine hundred seventeen".