256347819684226 has 16 divisors (see below), whose sum is σ = 391088927983104. Its totient is φ = 126003010214304.

The previous prime is 256347819684217. The next prime is 256347819684403. The reversal of 256347819684226 is 622486918743652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4541602770 + ... + 4541659213.

It is an arithmetic number, because the mean of its divisors is an integer number (24443057998944).

Almost surely, 2^{256347819684226} is an apocalyptic number.

256347819684226 is a deficient number, since it is larger than the sum of its proper divisors (134741108298878).

256347819684226 is a wasteful number, since it uses less digits than its factorization.

256347819684226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9083262225.

The product of its digits is 1672151040, while the sum is 73.

The spelling of 256347819684226 in words is "two hundred fifty-six trillion, three hundred forty-seven billion, eight hundred nineteen million, six hundred eighty-four thousand, two hundred twenty-six".