256271214697 has 2 divisors, whose sum is σ = 256271214698. Its totient is φ = 256271214696.

The previous prime is 256271214643. The next prime is 256271214707. The reversal of 256271214697 is 796412172652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223430163856 + 32841050841 = 472684^2 + 181221^2 .

It is a cyclic number.

It is not a de Polignac number, because 256271214697 - 2¹⁹ = 256270690409 is a prime.

It is not a weakly prime, because it can be changed into another prime (256271214607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128135607348 + 128135607349.

It is an arithmetic number, because the mean of its divisors is an integer number (128135607349).

Almost surely, 2^256271214697 is an apocalyptic number.

It is an amenable number.

256271214697 is a deficient number, since it is larger than the sum of its proper divisors (1).

256271214697 is an equidigital number, since it uses as much as digits as its factorization.

256271214697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 52.

The spelling of 256271214697 in words is "two hundred fifty-six billion, two hundred seventy-one million, two hundred fourteen thousand, six hundred ninety-seven".