256612226146547 has 2 divisors, whose sum is σ = 256612226146548. Its totient is φ = 256612226146546.

The previous prime is 256612226146513. The next prime is 256612226146589. The reversal of 256612226146547 is 745641622216652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256612226146547 - 2¹⁶ = 256612226081011 is a prime.

It is not a weakly prime, because it can be changed into another prime (256612226146597) 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, 128306113073273 + 128306113073274.

It is an arithmetic number, because the mean of its divisors is an integer number (128306113073274).

Almost surely, 2^{256612226146547} is an apocalyptic number.

256612226146547 is a deficient number, since it is larger than the sum of its proper divisors (1).

256612226146547 is an equidigital number, since it uses as much as digits as its factorization.

256612226146547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58060800, while the sum is 59.

The spelling of 256612226146547 in words is "two hundred fifty-six trillion, six hundred twelve billion, two hundred twenty-six million, one hundred forty-six thousand, five hundred forty-seven".