255531617423 has 2 divisors, whose sum is σ = 255531617424. Its totient is φ = 255531617422.

The previous prime is 255531617371. The next prime is 255531617459. The reversal of 255531617423 is 324716135552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255531617423 - 2⁶ = 255531617359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255531617123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127765808711 + 127765808712.

It is an arithmetic number, because the mean of its divisors is an integer number (127765808712).

Almost surely, 2^255531617423 is an apocalyptic number.

255531617423 is a deficient number, since it is larger than the sum of its proper divisors (1).

255531617423 is an equidigital number, since it uses as much as digits as its factorization.

255531617423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756000, while the sum is 44.

The spelling of 255531617423 in words is "two hundred fifty-five billion, five hundred thirty-one million, six hundred seventeen thousand, four hundred twenty-three".