256273270013 has 2 divisors, whose sum is σ = 256273270014. Its totient is φ = 256273270012.

The previous prime is 256273270003. The next prime is 256273270051. The reversal of 256273270013 is 310072372652.

It is a happy number.

It is an a-pointer prime, because the next prime (256273270051) can be obtained adding 256273270013 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255749684089 + 523585924 = 505717^2 + 22882^2 .

It is a cyclic number.

It is not a de Polignac number, because 256273270013 - 2¹⁸ = 256273007869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256273270003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128136635006 + 128136635007.

It is an arithmetic number, because the mean of its divisors is an integer number (128136635007).

Almost surely, 2^256273270013 is an apocalyptic number.

It is an amenable number.

256273270013 is a deficient number, since it is larger than the sum of its proper divisors (1).

256273270013 is an equidigital number, since it uses as much as digits as its factorization.

256273270013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 38.

The spelling of 256273270013 in words is "two hundred fifty-six billion, two hundred seventy-three million, two hundred seventy thousand, thirteen".