255544401223 has 4 divisors (see below), whose sum is σ = 258415686720. Its totient is φ = 252673115728.

The previous prime is 255544401209. The next prime is 255544401227. The reversal of 255544401223 is 322104445552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255544401223 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 (255544401227) 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 3 ways as a sum of consecutive naturals, for example, 1435642615 + ... + 1435642792.

It is an arithmetic number, because the mean of its divisors is an integer number (64603921680).

Almost surely, 2^255544401223 is an apocalyptic number.

255544401223 is a deficient number, since it is larger than the sum of its proper divisors (2871285497).

255544401223 is an equidigital number, since it uses as much as digits as its factorization.

255544401223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871285496.

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 255544401223 its reverse (322104445552), we get a palindrome (577648846775).

The spelling of 255544401223 in words is "two hundred fifty-five billion, five hundred forty-four million, four hundred one thousand, two hundred twenty-three".