651609645317 has 2 divisors, whose sum is σ = 651609645318. Its totient is φ = 651609645316.

The previous prime is 651609645301. The next prime is 651609645319. The reversal of 651609645317 is 713546906156.

651609645317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487135598401 + 164474046916 = 697951^2 + 405554^2 .

It is a cyclic number.

It is not a de Polignac number, because 651609645317 - 2⁴ = 651609645301 is a prime.

Together with 651609645319, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651609645319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325804822658 + 325804822659.

It is an arithmetic number, because the mean of its divisors is an integer number (325804822659).

Almost surely, 2^651609645317 is an apocalyptic number.

It is an amenable number.

651609645317 is a deficient number, since it is larger than the sum of its proper divisors (1).

651609645317 is an equidigital number, since it uses as much as digits as its factorization.

651609645317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4082400, while the sum is 53.

The spelling of 651609645317 in words is "six hundred fifty-one billion, six hundred nine million, six hundred forty-five thousand, three hundred seventeen".