256906420606 has 8 divisors (see below), whose sum is σ = 420392324664. Its totient is φ = 116775645720.

The previous prime is 256906420597. The next prime is 256906420609. The reversal of 256906420606 is 606024609652.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256906420609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5838782265 + ... + 5838782308.

It is an arithmetic number, because the mean of its divisors is an integer number (52549040583).

Almost surely, 2^256906420606 is an apocalyptic number.

256906420606 is a deficient number, since it is larger than the sum of its proper divisors (163485904058).

256906420606 is a wasteful number, since it uses less digits than its factorization.

256906420606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11677564586.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 256906420606 in words is "two hundred fifty-six billion, nine hundred six million, four hundred twenty thousand, six hundred six".