4256340066497 has 2 divisors, whose sum is σ = 4256340066498. Its totient is φ = 4256340066496.

The previous prime is 4256340066449. The next prime is 4256340066529. The reversal of 4256340066497 is 7946600436524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4252466746801 + 3873319696 = 2062151^2 + 62236^2 .

It is a cyclic number.

It is not a de Polignac number, because 4256340066497 - 2¹⁴ = 4256340050113 is a prime.

It is not a weakly prime, because it can be changed into another prime (4256340066437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2128170033248 + 2128170033249.

It is an arithmetic number, because the mean of its divisors is an integer number (2128170033249).

Almost surely, 2^{4256340066497} is an apocalyptic number.

It is an amenable number.

4256340066497 is a deficient number, since it is larger than the sum of its proper divisors (1).

4256340066497 is an equidigital number, since it uses as much as digits as its factorization.

4256340066497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26127360, while the sum is 56.

The spelling of 4256340066497 in words is "four trillion, two hundred fifty-six billion, three hundred forty million, sixty-six thousand, four hundred ninety-seven".