256022655144468 has 24 divisors (see below), whose sum is σ = 600686671559520. Its totient is φ = 84869388444960.

The previous prime is 256022655144467. The next prime is 256022655144521. The reversal of 256022655144468 is 864441556220652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256022655144461) 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 in 7 ways as a sum of consecutive naturals, for example, 58937073138 + ... + 58937077481.

It is an arithmetic number, because the mean of its divisors is an integer number (25028611314980).

Almost surely, 2^{256022655144468} is an apocalyptic number.

It is an amenable number.

256022655144468 is an abundant number, since it is smaller than the sum of its proper divisors (344664016415052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256022655144468 is a wasteful number, since it uses less digits than its factorization.

256022655144468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117874150807 (or 117874150805 counting only the distinct ones).

The product of its (nonzero) digits is 110592000, while the sum is 60.

The spelling of 256022655144468 in words is "two hundred fifty-six trillion, twenty-two billion, six hundred fifty-five million, one hundred forty-four thousand, four hundred sixty-eight".