641612072317 has 2 divisors, whose sum is σ = 641612072318. Its totient is φ = 641612072316.

The previous prime is 641612072239. The next prime is 641612072323. The reversal of 641612072317 is 713270216146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 629021885881 + 12590186436 = 793109^2 + 112206^2 .

It is a cyclic number.

It is not a de Polignac number, because 641612072317 - 2¹¹ = 641612070269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 641612072317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641612072327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320806036158 + 320806036159.

It is an arithmetic number, because the mean of its divisors is an integer number (320806036159).

Almost surely, 2^641612072317 is an apocalyptic number.

It is an amenable number.

641612072317 is a deficient number, since it is larger than the sum of its proper divisors (1).

641612072317 is an equidigital number, since it uses as much as digits as its factorization.

641612072317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 641612072317 in words is "six hundred forty-one billion, six hundred twelve million, seventy-two thousand, three hundred seventeen".