256144355352223 has 8 divisors (see below), whose sum is σ = 292074106555728. Its totient is φ = 222532652613504.

The previous prime is 256144355352163. The next prime is 256144355352341. The reversal of 256144355352223 is 322253553441652.

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

It is a cyclic number.

It is not a de Polignac number, because 256144355352223 - 2²¹ = 256144353255071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256144355752223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579512115961 + ... + 579512116402.

It is an arithmetic number, because the mean of its divisors is an integer number (36509263319466).

Almost surely, 2^{256144355352223} is an apocalyptic number.

256144355352223 is a deficient number, since it is larger than the sum of its proper divisors (35929751203505).

256144355352223 is a wasteful number, since it uses less digits than its factorization.

256144355352223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159024232393.

The product of its digits is 25920000, while the sum is 52.

The spelling of 256144355352223 in words is "two hundred fifty-six trillion, one hundred forty-four billion, three hundred fifty-five million, three hundred fifty-two thousand, two hundred twenty-three".