255664312123 has 16 divisors (see below), whose sum is σ = 285526528992. Its totient is φ = 226968480000.

The previous prime is 255664312117. The next prime is 255664312129. The reversal of 255664312123 is 321213466552.

It is an interprime number because it is at equal distance from previous prime (255664312117) and next prime (255664312129).

It is a cyclic number.

It is not a de Polignac number, because 255664312123 - 2³⁷ = 118225358651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255664312129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1495068 + ... + 1657273.

It is an arithmetic number, because the mean of its divisors is an integer number (17845408062).

Almost surely, 2^255664312123 is an apocalyptic number.

255664312123 is a deficient number, since it is larger than the sum of its proper divisors (29862216869).

255664312123 is a wasteful number, since it uses less digits than its factorization.

255664312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152526.

The product of its digits is 259200, while the sum is 40.

Adding to 255664312123 its reverse (321213466552), we get a palindrome (576877778675).

The spelling of 255664312123 in words is "two hundred fifty-five billion, six hundred sixty-four million, three hundred twelve thousand, one hundred twenty-three".