56665611816301 has 2 divisors, whose sum is σ = 56665611816302. Its totient is φ = 56665611816300.

The previous prime is 56665611816211. The next prime is 56665611816313. The reversal of 56665611816301 is 10361811656665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55455589816201 + 1210022000100 = 7446851^2 + 1100010^2 .

It is a cyclic number.

It is not a de Polignac number, because 56665611816301 - 2¹³ = 56665611808109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56665611816101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28332805908150 + 28332805908151.

It is an arithmetic number, because the mean of its divisors is an integer number (28332805908151).

Almost surely, 2^{56665611816301} is an apocalyptic number.

It is an amenable number.

56665611816301 is a deficient number, since it is larger than the sum of its proper divisors (1).

56665611816301 is an equidigital number, since it uses as much as digits as its factorization.

56665611816301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 56665611816301 in words is "fifty-six trillion, six hundred sixty-five billion, six hundred eleven million, eight hundred sixteen thousand, three hundred one".