656414403197297 has 2 divisors, whose sum is σ = 656414403197298. Its totient is φ = 656414403197296.

The previous prime is 656414403197281. The next prime is 656414403197317. The reversal of 656414403197297 is 792791304414656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 510112895891041 + 146301507306256 = 22585679^2 + 12095516^2 .

It is a cyclic number.

It is not a de Polignac number, because 656414403197297 - 2⁴ = 656414403197281 is a prime.

It is not a weakly prime, because it can be changed into another prime (656414103197297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328207201598648 + 328207201598649.

It is an arithmetic number, because the mean of its divisors is an integer number (328207201598649).

Almost surely, 2^{656414403197297} is an apocalyptic number.

It is an amenable number.

656414403197297 is a deficient number, since it is larger than the sum of its proper divisors (1).

656414403197297 is an equidigital number, since it uses as much as digits as its factorization.

656414403197297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 274337280, while the sum is 68.

The spelling of 656414403197297 in words is "six hundred fifty-six trillion, four hundred fourteen billion, four hundred three million, one hundred ninety-seven thousand, two hundred ninety-seven".