256011112613 has 2 divisors, whose sum is σ = 256011112614. Its totient is φ = 256011112612.

The previous prime is 256011112601. The next prime is 256011112619. The reversal of 256011112613 is 316211110652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180494973409 + 75516139204 = 424847^2 + 274802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256011112613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256011112619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128005556306 + 128005556307.

It is an arithmetic number, because the mean of its divisors is an integer number (128005556307).

Almost surely, 2^256011112613 is an apocalyptic number.

It is an amenable number.

256011112613 is a deficient number, since it is larger than the sum of its proper divisors (1).

256011112613 is an equidigital number, since it uses as much as digits as its factorization.

256011112613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 256011112613 in words is "two hundred fifty-six billion, eleven million, one hundred twelve thousand, six hundred thirteen".