256347004226 has 8 divisors (see below), whose sum is σ = 384655766544. Its totient is φ = 128128415380.

The previous prime is 256347004127. The next prime is 256347004247. The reversal of 256347004226 is 622400743652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 22536260 + ... + 22547631.

It is an arithmetic number, because the mean of its divisors is an integer number (48081970818).

Almost surely, 2^256347004226 is an apocalyptic number.

256347004226 is a deficient number, since it is larger than the sum of its proper divisors (128308762318).

256347004226 is a wasteful number, since it uses less digits than its factorization.

256347004226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45086736.

The product of its (nonzero) digits is 483840, while the sum is 41.

Adding to 256347004226 its reverse (622400743652), we get a palindrome (878747747878).

The spelling of 256347004226 in words is "two hundred fifty-six billion, three hundred forty-seven million, four thousand, two hundred twenty-six".