71709000641 has 2 divisors, whose sum is σ = 71709000642. Its totient is φ = 71709000640.

The previous prime is 71709000637. The next prime is 71709000647. The reversal of 71709000641 is 14600090717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64070240641 + 7638760000 = 253121^2 + 87400^2 .

It is a cyclic number.

It is not a de Polignac number, because 71709000641 - 2² = 71709000637 is a prime.

It is not a weakly prime, because it can be changed into another prime (71709000647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35854500320 + 35854500321.

It is an arithmetic number, because the mean of its divisors is an integer number (35854500321).

Almost surely, 2^71709000641 is an apocalyptic number.

It is an amenable number.

71709000641 is a deficient number, since it is larger than the sum of its proper divisors (1).

71709000641 is an equidigital number, since it uses as much as digits as its factorization.

71709000641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The spelling of 71709000641 in words is "seventy-one billion, seven hundred nine million, six hundred forty-one", and thus it is an aban number.