256507322027113 has 2 divisors, whose sum is σ = 256507322027114. Its totient is φ = 256507322027112.

The previous prime is 256507322027069. The next prime is 256507322027221. The reversal of 256507322027113 is 311720223705652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253639610088489 + 2867711938624 = 15926067^2 + 1693432^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256507322027113 is a prime.

It is a super-2 number, since 2×256507322027113² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (256502322027113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128253661013556 + 128253661013557.

It is an arithmetic number, because the mean of its divisors is an integer number (128253661013557).

Almost surely, 2^{256507322027113} is an apocalyptic number.

It is an amenable number.

256507322027113 is a deficient number, since it is larger than the sum of its proper divisors (1).

256507322027113 is an equidigital number, since it uses as much as digits as its factorization.

256507322027113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 256507322027113 in words is "two hundred fifty-six trillion, five hundred seven billion, three hundred twenty-two million, twenty-seven thousand, one hundred thirteen".