256221061000606 has 8 divisors (see below), whose sum is σ = 413895560077944. Its totient is φ = 118255874307960.

The previous prime is 256221061000579. The next prime is 256221061000621. The reversal of 256221061000606 is 606000160122652.

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

It is a congruent number.

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, 4927328096140 + ... + 4927328096191.

It is an arithmetic number, because the mean of its divisors is an integer number (51736945009743).

Almost surely, 2^{256221061000606} is an apocalyptic number.

256221061000606 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

256221061000606 is a deficient number, since it is larger than the sum of its proper divisors (157674499077338).

256221061000606 is a wasteful number, since it uses less digits than its factorization.

256221061000606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9854656192346.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 256221061000606 in words is "two hundred fifty-six trillion, two hundred twenty-one billion, sixty-one million, six hundred six", and thus it is an aban number.